Publications
| Title | Abstract | Year Filter | PMID(sorted ascending) Filter |
|---|
| genes for dwarfness in wheat, triticum aestivum l. | the genetic control of plant height was studied in crosses of four spring wheats involving the standard height variety ramona 50 and short-statured selections olesen, d6301, and d6899. data from parent, f(1), f(2), and f(3) populations indicated that four independently segregating loci account for most of the differences among the four varieties. two major genes of a highly recessive nature condition reduced height in olesen and the norin 10 derivative d6301. olesen also carries a third dwarfing ... | 1973 | 17248645 |
| genetics of heading time in wheat (triticum aestivum l.). ii. the inheritance of vernalization response. | the inheritance of vernalization response was studied in crosses involving four spring wheats (sonora 64 (s), pitic 62 (p), justin (j) and thatcher (t)) and three winter wheats (blackhull (b), early blackhull (e) and extra early blackhull (ee)).-all winter cultivars were highly responsive to vernalization, and pitic 62 was the only spring cultivar whose time to heading was significantly accelerated following cold treatments. when vernalized and grown under long days, spring and winter cultivars ... | 1974 | 17248646 |
| cytogenetics of chromosome pairing in wheat. | meiotic chromosome pairing in triticum aestivum is controlled by genetic systems promoting and reducing pairing. the pairing of homoeologous chromosomes is prevented principally by the activity of a single locus (ph) distally located on the long arm of chromosome 5b. in certain hybrids, supernumerary chromosomes (b chromosomes) from aegilops species can compensate for the absence of chromosome 5b preventing or reducing homoeologous pairing. temperature-dependent variants and colchicine sensitivi ... | 1974 | 17248662 |
| determination of the chromosomal location of a glutamate oxaloacetate transaminase structural gene using triticum-agropyron translocations. | the glutamate oxaloacetate transaminase (got) zymogram phenotypes of a series of 15 translocation lines, a chromosome addition line and a chromosome substitution line were determined. in each of the translocation lines a segment of the long arm of triticum aestivum chromosome 3d has been replaced by a portion of an agropyron elongatum homoeologue. evidence was obtained that the products of the t. aestivum got-3 triplicate structural gene set randomly dimerize with the product of the homoeologous ... | 1976 | 17248708 |
| gene expression in alloploids: genetic control of lipopurothionins in wheat. | lipopurothionins are complexes of basic polypeptides and polar lipids found in petroleum ether extracts of wheat endosperm. location of the structural genes for the protein moiety and of genes probably controlling the lipid moiety has been achieved by analysis of compensated nulli-tetrasomic and ditelosomic lines of triticum aestivum l. cv. chinese spring, as well as of other genetic stocks. there are two electrophoretic variants of the apoprotein designated alpha and beta purothionins. structur ... | 1976 | 17248727 |
| localization of structural and regulatory genes for phosphodiesterase in wheat (triticum aestivum). | genes (pde-a3; pde-b3; pde-d3) for phosphodiesterase (pde; e.c. 3.1.4.1.) isoenzymes in hexaploid wheat were located on the three homoeologous chromosomes of group 3 by testing the electrophoretic banding pattern of monosomic, nullisomic and nullisomic/tetrasomic compensation lines of "chinese spring" variety. in plants nullisomic for chromosome 5b, the 3d structural gene is not expressed and this lack of expression can be overcome by four doses of either homoeologous chromosome 5a or 5d. our da ... | 1977 | 17248749 |
| control of endosperm proteins in triticum aestivum (var. chinese spring) and aegilops umbellulata by homoeologous group 1 chromosomes. | the genetic control of major wheat endosperm proteins by homoeologous group 1 chromosomes has been studied by two-dimensional polyacrylamide gel electrophoresis. the control of at least 15 distinct protein subunits or groups of protein subunits has been allocated to chromosomes 1a, 1b and 1d of chinese spring wheat from the analysis of grains of aneuploid genotypes. in addition, six protein subunits have been shown to be controlled by chromosome 1c(u) of the related species, aegilops umbellulata ... | 1979 | 17248961 |
| nonstructural chromosome differentiation among wheat cultivars, with special reference to differentiation of chromosomes in related species. | wheat cultivar chinese spring (triticum aestivum l. em. thell.) was crossed with cultivars hope, cheyenne and timstein. in all three hybrids, the frequencies of pollen mother cells (pmcs) with univalents at metaphase i (mi) were higher than those in the parental cultivars. no multivalents were observed in the hybrids, indicating that the cultivars do not differ by translocations. thirty-one chinese spring telosomic lines were then crossed with substitution lines in which single chromosomes of th ... | 1981 | 17249077 |
| selection and identification of a spontaneous alien chromosome translocation in wheat. | a wheat (triticum aestivum l. emend thell) disomic addition line (2n = 6x = 44), sh1-152-2, with a pair of elytrigia pontica (podp.) holub 2n = 10x = 70 [syn. agropyron elongatum (host) p.b.] chromosomes controlling blue aleurone color was crossed with a short-statured spring wheat ;sonora 64' (t. aestivum). isoline pairs of blue-disomic addition lines and nonblue euploid lines were produced by selecting plants segregating for blue aleurone for 12 generations. nineteen of 20 blue aleurone lines ... | 1981 | 17249090 |
| genetic diversity of the cytoplasm in triticum and aegilops. viii. fraction i protein of 39 cytoplasms. | the electrophoretic characteristics of the cytoplasmically controlled large subunit of the fraction i protein of 36 alloplasmic and three euplasmic control lines are reported. these lines, representing the cytoplasms of 32 triticum and aegilops species, had either h- or l-type large subunits in their fraction i protein; the diploid triticum and most aegilops species, including ae. bicornis and ae. sharonensis, had the l-type subunits; whereas, all the polyploid triticum species (emmer, timopheev ... | 1981 | 17249126 |
| identification and quantification of seed carotenoids in selected wheat species. | selected primitive and modern wheat species were evaluated on the basis of their carotenoid composition and effects of the genotype and environment on lutein using spectrometry and liquid chromatography. carotenoids in the wheat extracts were identified and confirmed on the basis of their uv/vis and mass spectra compared with those of authentic standards. the protonated molecule (m + 1)+ at m/z 569 was the predominant ion for zeaxanthin compared to the fragment ion at m/z 551 for lutein. a simil ... | 2007 | 17263475 |
| evaluation of cymbopogon martinii oil extract for control of postharvest insect deterioration in cereals and legumes. | the essential oil of cymbopogon martinii was tested for its potency as a botanical pesticide to protect stored wheat (triticum aestivum) and gram (garbanzo bean, cicer arietinum) from insect infestation. the c. martinii oil was potent as a fumigant in stored gram. the oil was an effective repellent against the beetles callosobruchus chinensis and tribolium castaneum. geraniol, the major component of the oil, was not as effective as the oil itself. c. martinii oil significantly affected ovipositi ... | 2007 | 17265877 |
| tlxi, a novel type of xylanase inhibitor from wheat (triticum aestivum) belonging to the thaumatin family. | wheat (triticum aestivum) contains a previously unknown type of xylanase (ec 3.2.1.8) inhibitor, which is described in the present paper for the first time. based on its >60% similarity to tlps (thaumatin-like proteins) and the fact that it contains the prosite ps00316 thaumatin family signature, it is referred to as tlxi (thaumatin-like xylanase inhibitor). tlxi is a basic (pi> or =9.3 in isoelectric focusing) protein with a molecular mass of approx. 18-kda (determined by sds/page) and it occur ... | 2007 | 17269932 |
| a wheat (triticum aestivum) protein phosphatase 2a catalytic subunit gene provides enhanced drought tolerance in tobacco. | multiple copies of genes encoding the catalytic subunit (c) of protein phosphatase 2a (pp2a) are commonly found in plants. for some of these genes, expression is up-regulated under water stress. the aim of this study was to investigate expression and characterization of tapp2ac-1 from triticum aestivum, and to evaluate the effects of tapp2ac-1 on nicotiana benthamiana in response to water stress. | 2007 | 17272305 |
| assessing the impact of ambient ozone on growth and yield of a rice (oryza sativa l.) and a wheat (triticum aestivum l.) cultivar grown in the yangtze delta, china, using three rates of application of ethylenediurea (edu). | foliar applications of ethylenediurea (abbreviated as edu) were made at 0, 150, 300 or 450 ppm to field-grown rice and wheat in the yangtze delta in china. rice and wheat responded differently to ambient ozone and edu applications. for wheat, some growth characteristics, such as yield, seed number per plant, seed set rate and harvest index, increased significantly at 300 ppm edu treatment, while for rice no parameters measured were statistically different regarding edu application. the reason ma ... | 2007 | 17275152 |
| changes in organic matter and residual effect of amendment with two-phase olive-mill waste on degraded agricultural soils. | agricultural soils from many parts of the mediterranean region are very poor in organic matter and are exposed to progressive degradation processes. therefore, additions of the olive-mill waste from a continuous two-phase system as an organic amendment can improve soil quality and hence mitigate the negative environmental and agronomic limitations of these soils. a field study under semiarid mediterranean conditions was conducted to evaluate the changes in organic matter after four consecutive a ... | 2007 | 17276494 |
| salt tolerance in a hordeum marinum-triticum aestivum amphiploid, and its parents. | growth, grain production, and physiological traits were evaluated for hordeum marinum, triticum aestivum (cv. chinese spring), and a h. marinum-t. aestivum amphiploid, when exposed to nacl treatments in a nutrient solution. h. marinum was more salt tolerant than t. aestivum and the amphiploid was intermediate, both for vegetative growth and relative grain production. h. marinum was best able to 'exclude' na(+) and cl(-), particularly at high external nacl. at 300 mm nacl, concentrations of na(+) ... | 2007 | 17283374 |
| screening of underivatized oligosaccharides extracted from the stems of triticum aestivum using porous graphitized carbon liquid chromatography-mass spectrometry. | highly polar oligosaccharide analytes are notoriously difficult to separate by hplc without prior derivatization or the use of highly alkaline eluent systems. using a porous graphitic carbon (pgc) hplc column, we have studied a pool of endogenous underivatized water-soluble oligosaccharides that were extracted from the stems of a range of wheat cultivars. the aqueous/organic eluents that are used with this stationary phase are ideal electrospray solvents and hence facilitate the on-line coupling ... | 2007 | 17284013 |
| [transgenic wheat expressing virus-derived hairpin rna is resistant to barley yellow dwarf virus]. | an expression vector expected to induce rna interference against barley yellow dwarf virus (bydv), which expressed a composite hprna with the dsrna stem homologous of bydv gpv replicase gene and the antisense rna loop homologous of coat protein gene, was designed without marker gene. the vector was transferred into callus cells from wheat (triticum aestivum l.) immature embryos by particle bombardment. to select the positive transformants as early as possible, a rapid pcr, which does not need ex ... | 2007 | 17284432 |
| identification of quantitative trait loci and environmental interactions for accumulation and remobilization of water-soluble carbohydrates in wheat (triticum aestivum l.) stems. | genetic analyses of nine traits associated with stem water-soluble carbohydrate (swsc) accumulation and remobilization at grain-filling period under drought stress (ds) and well-watered (ww) conditions were undertaken using doubled haploid lines (dhls) derived from two chinese common wheat cultivars. some significantly and very significantly positive correlation was observed among nine traits associated with swsc. higher phenotypic values for most traits were detected under ds. broad sense herit ... | 2007 | 17287530 |
| functional markers in wheat. | wheat (triticum aestivum l.) is one of the most important staple crops world-wide. gene-derived 'functional' markers (fms, also called perfect or diagnostic markers elsewhere) would be the ideal tools for marker-assisted breeding of wheat but, at present, their utility is restricted by the limited availability of genes that control agronomic characters. this bottleneck will be overcome in the next decade by ongoing genomics projects. another obstacle for assigning sequence to trait variation is ... | 2007 | 17292659 |
| molecular mapping of genes for coleoptile growth in bread wheat (triticum aestivum l.). | successful plant establishment is critical to the development of high-yielding crops. short coleoptiles can reduce seedling emergence particularly when seed is sown deep as occurs when moisture necessary for germination is deep in the subsoil. detailed molecular maps for a range of wheat doubled-haploid populations (cranbrook/halberd, sunco/tasman, cd87/katepwa and kukri/janz) were used to identify genomic regions affecting coleoptile characteristics length, cross-sectional area and degree of sp ... | 2007 | 17294164 |
| influences of phosphate nutritional level on the phytoavailability and speciation distribution of cadmium and lead in soil. | a pot experiment was conducted to examine the influence of phosphate levels on the phytoavailability and speciation distribution of cadmium (cd), lead (pb) in soil. spring wheat (triticum aestivum l.) was selected as the tested plant. there were 5 phosphate fertilizer(ca(h2po4)2) levels including 0, 50, 100, 200, and 400 mg p2o5/kg soil, marked by po, p1, p2, p3, and p4, respectively. cdcl2 x 2.5h2o and pb(no3)2 were added to soil as the following levels: cd + pb = 25+0, 0+1000, and 25+1000 mg/k ... | 2006 | 17294973 |
| the gametocidal chromosome as a tool for chromosome manipulation in wheat. | many alien chromosomes have been introduced into common wheat (the genus triticum) from related wild species (the genus aegilops). some alien chromosomes have unique genes that secure their existence in the host by causing chromosome breakage in the gametes lacking them. such chromosomes or genes, called gametocidal (gc) chromosomes or gc genes, are derived from different genomes (c, s, s(l) and m(g)) and belong to three different homoeologous groups 2, 3 and 4. the gc genes of the c and m(g) ge ... | 2007 | 17295127 |
| cadmium uptake and interaction with phytochelatins in wheat protoplasts. | in order to investigate the role of phytochelatins in short-time uptake of cd(2+) into the cytosol of wheat protoplasts, a new method was applied, using fluorescence microscopy and the heavy metal-specific fluorescent dye, 5-nitrobenzothiazole coumarin, btc-5n. the uptake of cd(2+) into protoplasts from 5- to 7-day-old wheat seedlings (triticum aestivum, l. cv. kadett) was lower in protoplasts from seedlings raised in the presence of 1 microm cdcl(2), than in the absence. presence of cdcl(2) in ... | 2007 | 17303432 |
| wheat (triticum aestivum l.) and barley (hordeum vulgare l.) multiple inositol polyphosphate phosphatases (minpps) are phytases expressed during grain filling and germination. | at present, little is known about the phytases of plant seeds in spite of the fact that this group of enzymes is the primary determinant for the utilization of the major phosphate storage compound in seeds, phytic acid. we report the cloning and characterization of complementary dnas (cdnas) encoding one of the groups of enzymes with phytase activity, the multiple inositol phosphate phosphatases (minpps). four wheat cdnas (taphyiia1, taphyiia2, taphyiib and taphyiic) and three barley cdnas (hvph ... | 2007 | 17309687 |
| influence of heat processing on the bioaccessibility of zinc and iron from cereals and pulses consumed in india. | influence of heat processing on the bioaccessibility of zinc and iron from food grains consumed in india was evaluated. cereals - rice (oryza sativa), finger millet (eleusine coracana), sorghum (sorghum vulgare), wheat (triticum aestivum), and maize (zea mays), and pulses - chickpea (cicer arietinum) - whole and decorticated, green gram (phaseolus aureus) - whole and decorticated, decorticated black gram (phaseolus mungo), decorticated red gram (cajanus cajan), cowpea (vigna catjang), and french ... | 2007 | 17317519 |
| a worldwide bread wheat core collection arrayed in a 384-well plate. | bread wheat (triticum aestivum), one of the world's major crops, is genetically very diverse. in order to select a representative sample of the worldwide wheat diversity, 3,942 accessions originating from 73 countries were analysed with a set of 38 genomic simple sequence repeat (ssr) markers. the number of alleles at each locus ranged from 7 to 45 with an average of 23.9 alleles per locus. the 908 alleles detected were used together with passport data to select increasingly large sub-samples th ... | 2007 | 17318494 |
| the structure of wild and domesticated emmer wheat populations, gene flow between them, and the site of emmer domestication. | the domestication of emmer wheat (triticum turgidum spp. dicoccoides, genomes bbaa) was one of the key events during the emergence of agriculture in southwestern asia, and was a prerequisite for the evolution of durum and common wheat. single- and multilocus genotypes based on restriction fragment length polymorphism at 131 loci were analyzed to describe the structure of populations of wild and domesticated emmer and to generate a picture of emmer domestication and its subsequent diffusion acros ... | 2007 | 17318496 |
| structural-functional state of thylakoid membranes of wheat genotypes under water stress. | plants were grown in field conditions in the wide area under normal water supply and severe water deficit. two wheat (triticum aestivum l.) genotypes contrasting by architectonics and differing in drought-resistance were used: giymatli-2/17, short stature, with broad and drooping leaves, drought-sensitive, and azamatli-95, short stature, with vertically oriented small leaves, drought-tolerant). it was found out that giymatli-2/17 was characterized by relatively low content of chl a-protein of ps ... | 2007 | 17321491 |
| hkt1;5-like cation transporters linked to na+ exclusion loci in wheat, nax2 and kna1. | bread wheat (triticum aestivum) has a greater ability to exclude na+ from its leaves and is more salt tolerant than durum wheat (triticum turgidum l. subsp. durum [desf.]). a novel durum wheat, line 149, was found to contain a major gene for na+ exclusion, nax2, which removes na+ from the xylem in the roots and leads to a high k+-to-na+ ratio in the leaves. nax2 was mapped to the distal region on chromosome 5al based on linkage to microsatellite markers. the nax2 locus on 5al coincides with the ... | 2007 | 17322337 |
| the structure of eukaryotic translation initiation factor-4e from wheat reveals a novel disulfide bond. | eukaryotic translation initiation factor-4e (eif4e) recognizes and binds the m(7) guanosine nucleotide at the 5' end of eukaryotic messenger rnas; this protein-rna interaction is an essential step in the initiation of protein synthesis. the structure of eif4e from wheat (triticum aestivum) was investigated using a combination of x-ray crystallography and nuclear magnetic resonance (nmr) methods. the overall fold of the crystallized protein was similar to eif4e from other species, with eight beta ... | 2007 | 17322339 |
| [features of the formation of self-fertile euploid lines (2n = 42) by self-pollination of the 46-chromosome barley-wheat bc1 hybrid hordeum marinum subsp. gussoneanum hudson (= h. geniculatum all.) (2n = 28) x triticum aestivum l. (2n = 42)]. | we studied some features of the development of self-fertile 42-chromosome lines on the base of self-pollination progeny of 46-chromosome plants obtained by backcrossing of barley--wheat hybrids hordeum marinum subsp. gussoneanum hudson (= h. geniculatum all.) (2n = 28) x triticum aestivum l. (2n = 42). the stabilization of karyotypes, resulting in 42-chromosome plants of the wheat type was generally completed by generation bc1f10. the plants of all self-pollination progenies, including bc1f10, s ... | 2006 | 17326388 |
| evidence of natural hybridization between aegilops geniculata and wheat under field conditions in central spain. | this study deals with hybrids between aegilops geniculata and bread wheat, triticum aestivum l., detected in two ae. geniculata populations in the "meseta central", spain's central plateau where wheat is a major crop. morphological traits and pentaploid chromosome numbers were used to identify hybrids in 2004 and 2005. the frequency of hybridization under natural conditions was calculated for one of these populations. six hybrids were detected from a sample of 3158 seeds from this population. th ... | 2007 | 17328856 |
| probing the effects of light and temperature on diurnal rhythms of phytosiderophore release in wheat. | * the existing literature is ambiguous as to whether the diurnal pulse in phytosiderophore (ps) release in the poaceae is mediated by light or temperature, or both. * here, wheat (triticum aestivum cv. yecora rojo) seedlings were grown in fe-sufficient (pfe = 16.5) and fe-deficient (pfe = 17.8) chelator-buffered nutrient solutions. six different light/temperature regimes were tested over 8 d in paired growth chambers. * phytosiderophore release patterns under a square-wave light regime were simi ... | 2007 | 17335501 |
| plant availability of nutrients recovered as solids from human urine tested in climate chamber on triticum aestivum l. | recovered nutrients by freezing-thawing from human urine in combination with struvite precipitation and nitrogen adsorption on zeolite and activated carbon have been tested in pot trials with wheat, triticum aestivum l., in a climate chamber during 21 days. a simple test design using sand as substrate was chosen to give a first, general evaluation of the nutrient (p and n) availability from these sources. dry weight, plant growth morphology, total-p and total-n were analysed. the tests show a sl ... | 2007 | 17336055 |
| an unusual posttranscriptional processing in two betaine aldehyde dehydrogenase loci of cereal crops directed by short, direct repeats in response to stress conditions. | various abilities to synthesize and accumulate glycine betaine (gb) are crucial for angiosperms to develop salt and drought tolerances. in higher plants, gb is synthesized by a two-step oxidation of choline via an intermediate form of betaine aldehyde, and catalyzed by choline monooxygenase and betaine aldehyde dehydrogenase (badh). in this study, numerous truncated and/or recombinant transcripts of two badh homologs resulting from an unusual posttranscriptional processing were detected in rice ... | 2007 | 17337526 |
| [the effect of intercultivar substitution of wheat triticum aestivum l. chromosomes on lipoxygenase activity and its correlation with the technological properties of flour]. | the effects of intercultivar substitution of individual chromosome pairs (except for 1b, 6d, and 7a) in the wheat cultivars saratovskaya 29 and janetzkis probat, differing in quality, on specific lipoxygenase activity, the grain yield per spike, and the main technological properties of flour and dough were studied. it was demonstrated that the substitution of individual chromosomes of the recipient cultivar saratovskaya 29 with the homologous chromosomes of the donor cultivar janetzkis probat ca ... | 2007 | 17345867 |
| wheat genotypes show contrasting abilities to recover from anoxia in spite of similar anoxic carbohydrate metabolism. | physiological and metabolic responses to anoxia and reaeration were compared for 4-7-day-old seedlings of 11 genotypes of wheat (triticum aestivum) with reputed differences in waterlogging tolerance. genotypes differed in seminal root elongation, and recovery of root tissue k(+) concentration, during reaeration following 72 h anoxia. post-anoxic recovery ranged from complete (100% retention of seminal root elongation potential) to almost nil (death of all seminal root apices and inability to rec ... | 2007 | 17349715 |
| [effect of red light on activity of camp phosphodiesterases in photoperiodically different cereals and vernalized winter wheat]. | red light illumination of seedlings of photoperiodically different cereals had a different effect on the activity of multiple cyclic adenosine monophosphate phosphodiesterases. the response of all phosphodiesterase forms was reversed in fully vernalized winter wheat triticum aestivum l. | 0 | 17352206 |
| chromosomal location of pm35, a novel aegilops tauschii derived powdery mildew resistance gene introgressed into common wheat (triticum aestivum l.). | a single gene controlling powdery mildew resistance was identified in the north carolina germplasm line nc96bgtd3 (ncd3) using genetic analysis of f(2) derived lines from a ncd3 x saluda cross. microsatellite markers linked to this pm gene were identified and their most likely order was xcfd7, 10.3 cm, xgdm43, 8.6 cm, xcfd26, 11.9 cm, pm gene. these markers and the pm gene were assigned to chromosome 5dl by means of chinese spring nullitetrasomic (nulli5d-tetra5a) and ditelosomic (dt5dl) lines. ... | 2007 | 17356863 |
| study on powdery mildew resistance transfer from s. cereale l.cv. weiling rye into wheat. | weiling rye (s. cereale l.cv.), a chinese dwarf rye, confers high powdery mildew (erysiphe gramininis f.sp.tritici) in china. my8443, a wheat cultivars infecting seriously powdery mildew disease, was used as the female parent and weiling rye was used as the donor of powdery mildew resistance in the study. a new wheat-rye translocation line,named no.147,was developed from bc2f6 progenies of wheat cultivars my8443 and weiling rye to transfer the resistance from weiling rye to common wheat. the pow ... | 2007 | 17357447 |
| leaf rust (puccinia triticina) resistance in wheat (triticum aestivum) cultivars grown in northern europe 1992-2002. | diversity of resistance to leaf rust caused by puccinia triticina can be enhanced in wheat (triticum aestivum) cultivars through a better knowledge of resistance genes that are present in important cultivars and germplasm. multi-pathotype tests on 84 wheat cultivars grown in denmark, finland, norway and sweden during 1992-2002 and 39 differential testers enabled the postulation of nine known genes for seedling resistance to leaf rust. genes lr1, lr2a, lr3, lr10, lr13, lr14a, lr17, lr23 and lr26 ... | 2006 | 17362328 |
| molecular characterization of high molecular weight glutenin subunit allele 1bx23 in common wheat introduced from hexaploid triticale. | high molecular weight glutenin subunit (hmw-gs) 1bx23, an x-type subset encoded by glu-b1p, which is only distributed in triticum turgidum, was successfully transferred from hexaploid triticale to common wheat line sy95-71. sodium dodecyl sulphate-polyacrylamide gel electrophoresis (sds-page) shows that subunit 1bx23 has a faster mobility than subunit 1bx7 and 1bx20, but slower than 1bx17. primers designed from the conserved regions in wheat hmw-gs gene promoter and coding sequences were used to ... | 2006 | 17362350 |
| effect of wheat stem sawfly damage on yield and quality of selected canadian spring wheat. | the wheat stem sawfly, cephus cinctus norton (hymenoptera: cephidae), has reached outbreak status at most locations in the southern canadian prairies. solid-stemmed wheat, triticum aestivum l., cultivars, which are less susceptible to damage, remain the primary management option. this article quantifies the effect of wheat stem sawfly damage on grain yield and quality at harvest and determines how cultivar selection affects harvest losses. solid-stemmed cultivars were compared with hollow-stemme ... | 2007 | 17370813 |
| gliadain, a gibberellin-inducible cysteine proteinase occurring in germinating seeds of wheat, triticum aestivum l., specifically digests gliadin and is regulated by intrinsic cystatins. | we cloned a new cysteine proteinase of wheat seed origin, which hydrolyzed the storage protein gliadin almost specifically, and was named gliadain. gliadain mrna was expressed 1 day after the start of seed imbibition, and showed a gradual increase thereafter. gliadain expression was suppressed when uniconazol, a gibberellin synthesis inhibitor, was added to germinating seeds. histochemical detection with anti-gliadain serum indicated that gliadain was present in the aleurone layer and also that ... | 2007 | 17371549 |
| expression of puroindoline a enhances leaf rust resistance in transgenic tetraploid wheat. | the purouindoline gene (pin) coding for puroindoline proteins (pins) is located on chromosome 5d, controls grain hardness, and the pins have in vitro antimicrobial activity against gram-positive (g+) bacteria, gram-negative (g-) bacteria and fungi. wheat leaf rust caused by puccinia triticina is one of the most important fungal diseases for common wheat with aabbdd genomes. tetraploid wheat (aabb genome) varieties luna and venusia were transformed with the purouindoline a (pina) gene by bombardm ... | 2008 | 17380426 |
| [chromosomal location of genes for vernalization duration (vrd) in winter bread wheat]. | in this study, we carried out monosomic analysis of two isogenic lines of cultivar mironovskaya 808, monogenically dominant for genes vrd1 and vrd2 reducing the cultivar vernalization requirement duration from 50 to respectively 35 and 45 days, as well as analysis of substitution lines cappelle desperez/bezostaya 1. gene vrdl is localized on chromosome 4a; vrd2, on chromosome 5d. the third gene, which is not allelic to the former two, is present in cultivar cappelle desperez on either the ia, 6a ... | 2007 | 17385319 |
| inter- and intra-guild interactions related to aphids in nettle (urtica dioica l.) strips closed to field crops. | a field experiment designed to assess the biodiversity related to nettle strips closed to crops, and more particularly the aphid and related beneficial populations, was established in experimental farm located in gembloux (belgium). margin strips of nettle (urtica dioica) closed to wheat (triticum aestivum), green pea (pisum sativum) and rape (brassicae napus) fields were investigated. the diversity, abundance of aphids and related predators were analysed according to the plant crop species and ... | 2006 | 17385508 |
| varying patterns of protein synthesis in bread wheat during heat shock. | high temperatures during seedling growth are considered as one of the factors that can modify surviving properties in wheat (triticum aestivum l.) plant. this work attempts to evaluate the heat shock responses of seedling of winter wheat (bezostaya-1) using growth parameters (seedling length, embryonal root length and embryonal root number), membrane stability index (msi) and two dimensional (2d) gel electrophoresis analysis of heat shock proteins (hsps) during heat shock. seedlings grown until ... | 2007 | 17385547 |
| dicot and monocot plants differ in retinoblastoma-related protein subfamilies. | the present study supports the view that the retinoblastoma functions are shared by two distinct retinoblastoma-related (rbr) protein subfamilies in the monocot cereal species, whereas dicot plants have only a single rbr protein. genes encoding rbr proteins were identified and characterized in alfalfa (medicago sativa), rice (oryza sativa), and wheat (triticum aestivum). the alfalfa msrbr gene encodes a new member of the dicot rbr proteins (subfamily a). a comparison was made of two rice genes, ... | 2007 | 17389586 |
| identification of prevalent potyvirus on maize and johnsongrass in corn fields of tehran province of iran and a study on some of its properties. | during a growing season in 2004, 231 leaf samples of virus infected and mosaic and dwarf mosaic symptoms showing maize (zea mays l.) plants and 258 leaf samples of mosaic showing johnsongrass (sorghum halepens l.) plants from various corn fields in tehran province were collected. serological tests of das-elisa and diba were performed on samples using antisera of sugarcane mosaic virus (scmv), maize dwarf mosaic virus (mdmv), sorghum mosaic virus (srmv) and johnsongrasss mosaic virus (jgmv). in b ... | 2006 | 17390895 |
| engineering molecular recognition of endoxylanase enzymes and their inhibitors through phage display. | specific binding of interacting proteins generally depends on a limited set of amino acid residues located at the contact interface. we have applied a phage-display-based screening method to simultaneously evaluate the role of multiple residues of endo-beta-1,4-xylanase enzymes in conferring binding specificity towards two different endoxylanase inhibitors. seven residues of the two beta-strand 'thumb' region of trichoderma longibrachiatum endo-beta-1,4-xylanase xynii were targeted for randomiza ... | 2007 | 17393541 |
| detection of soft wheat in semolina and durum wheat bread by analysis of dna microsatellites. | the aim of this work was to evaluate the analysis of dna microsatellites for the detection of soft wheat (triticum aestivum l.) in semolina and durum wheat bread (prepared from triticum turgidum l. var. durum). the results enabled selection of an efficient d-genome-specific repetitive dna sequence to detect common wheat in semolina and breads by qualitative pcr with a threshold of 3 and 5%, respectively, lowered to 2.5% by real-time pcr. this is of major importance for checking during production ... | 2007 | 17394336 |
| [effects of free-air co2 enrichment (face) on yield formation of wheat]. | to investigate the effects of predicted higher co2 levels on the growth duration, plant height, yield, and yield components of wheat (triticum aestivum l.), a free-air co2 enrichment (face) experiment with weak gluten variety ningmai 9 was conducted at anzhen of wuxi in jiangsu province in 2001-2002 and 2002-2003 growth seasons. the target [co2] in face plots was 200 microl x l(-1) above that in ambient air. three levels of n were supplied, i.e., 90 kg x hm(-2) (2001-2002) and 125 kg x hm(-2)(20 ... | 2007 | 17396503 |
| characterization of wheat germin (oxalate oxidase) expressed by pichia pastoris. | high-level secretory expression of wheat (triticum aestivum) germin/oxalate oxidase was achieved in pichia pastoris fermentation cultures as an alpha-mating factor signal peptide fusion, based on the native wheat cdna coding sequence. the oxalate oxidase activity of the recombinant enzyme is substantially increased (7-fold) by treatment with sodium periodate, followed by ascorbate reduction. using these methods, approximately 1 g (4x10(4) u) of purified, activated enzyme was obtained following e ... | 2007 | 17399681 |
| [the cyanogenic glycosides of triticum, secale and sorghum]. | the cyanogenic glucosides obtained from seedlings of triticum aestivum ssp. spelta, the inflorescences of secale montanum and the caryopses of sorghum bicolor were identified by chromatographic and spectroscopic techniques. in all cases the cyanogenic principle is 2-beta- d-glucopyranosyloxy- 2 - (4-hydroxyphenyl) -2s-acetonitril (dhurrin). according to thinlayer chromatographic investigations the cyanogenic glucoside of secale cereale seems also to be dhurrin. | 1981 | 17401823 |
| the effects of walnut and pine leaves on bread wheat growth and frequence of common weed species in the east-mediterranean region. | a field experiment was carried out to determine the effects of walnut (juglans regia l.) and pine (pinus sp.) leaves on bread wheat (triticum aestivum l.) growth and weed control, during 2001-02 and 2002-03 growing seasons in east mediterranean region of turkey. in this research, the treatments were: applications of ground walnut leaves (gwl) and ground pine leaves (gpl) at 19 g/m2 dose at zadoks-11, applications of 200, 400 and 800 cc/m2 of walnut leaves extract (wle2, wle4 and wle8 respectivel ... | 2006 | 17402244 |
| interaction between cadmium, lead and potassium fertilizer (k2so4) in a soil-plant system. | a pot experiment was conducted to examine the influence of potassium (k) fertilizer (k(2)so(4)) application on the phytoavailability and speciation distribution of cadmium (cd) and lead (pb) in soil. spring wheat (triticum aestivum l.) was selected as the test plant. there were seven treatments including single and combined contamination of cd and pb. cdcl(2).2.5 h(2)o and pb(no(3))(2) were added to the soil at the following dosages: cd + pb = 0.00 + 0.00, 5.00 + 0.00, 25.0 + 0.00, 0.00 + 500, 0 ... | 2007 | 17404694 |
| analysis of remote asymmetric somatic hybrids between common wheat and arabidopsis thaliana. | callus-derived protoplasts of common wheat (triticum aestivum l. cv. hesheng 3) irradiated with ultraviolet light were fused by using the peg method with cell suspension-derived protoplasts of arabidopsis thaliana. regenerated calli and green plants resembling that of wheat were obtained. the hybrid nature of putative calli and plants were confirmed by isozyme, random amplified polymorphic dna and genomic in situ hybridization (gish) analyses. gish results indicated that 1 approximately 3 small ... | 2007 | 17406873 |
| transcriptional profiling of hexaploid wheat (triticum aestivum l.) roots identifies novel, dehydration-responsive genes. | we used a long-oligonucleotide microarray to identify transcripts that increased or decreased in abundance in roots of dehydration-tolerant hexaploid bread wheat, in response to withholding of water. we observed that the major classes of dehydration-responsive genes (e.g. osmoprotectants, compatible solutes, proteases, glycosyltransferases/hydrolases, signal transducers components, ion transporters) were generally similar to those observed previously in other species and osmotic stresses. more s ... | 2007 | 17407540 |
| the della domain of ga insensitive mediates the interaction with the ga insensitive dwarf1a gibberellin receptor of arabidopsis. | gibberellic acid (ga) promotes seed germination, elongation growth, and flowering time in plants. ga responses are repressed by della proteins, which contain an n-terminal della domain essential for ga-dependent proteasomal degradation of della repressors. mutations of or within the della domain of della repressors have been described for species including arabidopsis thaliana, wheat (triticum aestivum), maize (zea mays), and barley (hordeum vulgare), and we show that these mutations confer ga i ... | 2007 | 17416730 |
| meiotic restitution in wheat polyhaploids (amphihaploids): a potent evolutionary force. | polyploidy is well recognized as a major force in plant speciation. among the polyploids in nature, allopolyploids are preponderant and include important crop plants like bread wheat, triticum aestivum l. (2n = 6x = 42; aabbdd genomes). allopolyploidy must result through concomitant or sequential events that entail interspecific or intergeneric hybridization and chromosome doubling in the resultant hybrids. to gain insight into the mechanism of evolution of wheat, we extracted polyhaploids of 2 ... | 2010 | 17416932 |
| wheat phytotoxicity from arsenic and cadmium separately and together in solution culture and in a calcareous soil. | the toxicity of two toxic elements, arsenic (as) and cadmium (cd) (individually or in combination) on root elongation of wheat seedlings (triticum aestivum, l.) were investigated both in hydroponics and in soils freshly spiked with the toxic elements. median effective concentration (ec(50)) and non-observed effect concentration (noec) were used to investigate the toxic thresholds and potencies of the two elements. the ec(50) for as was 0.97 microm in hydroponics and 196 mgkg(-1) in soil, and 4.3 ... | 2007 | 17418485 |
| induction of phenolic compounds in wheat (triticum aestivum l.) tissue cultures by streptomycin. | the tissue cultures of wheat (triticum aestivum l.) were induced from the mature embryos (explants) of the dry grains and grown on ms medium containing kinetin (0.1 mg/1) and 2,4 d (1.0 mg/l). the cultures were incubated for two weeks at (25+/-2) degrees c under a light/dark regime (16 h light daily). the formed calli were subcultured at the beginning of the stationary growth phase (15 days) with fresh ms medium containing 0, 5, 10, 25, 50, 100, 150 mg/l streptomycin elicitor and maintained for ... | 2013 | 17425105 |
| molecular characterization and chromosome-specific trap-marker development for langdon durum d-genome disomic substitution lines. | the aneuploid stocks of durum wheat (triticum turgidum l. subsp. durum (desf.) husnot) and common wheat (t. aestivum l.) have been developed mainly in 'langdon' (ldn) and 'chinese spring' (cs) cultivars, respectively. the ldn-cs d-genome chromosome disomic substitution (ldn-ds) lines, where a pair of cs d-genome chromosomes substitute for a corresponding homoeologous a- or b-genome chromosome pair of ldn, have been widely used to determine the chromosomal locations of genes in tetraploid wheat. ... | 2006 | 17426769 |
| mapping of fhb resistance qtls in tetraploid wheat. | triticum turgidum l var. durum is known to be particularly susceptible to infection by fusarium graminearum, the causal agent for fusarium head blight (fhb), which results in severe yield losses and grain contaminated with mycotoxins. this research was aimed at identifying fhb resistance in tetraploid wheat and mapping the location of fhb resistance genes. a tetraploid cross of durum wheat ('strongfield') x triticum carthlicum ('blackbird') was used to generate a doubled-haploid (dh) population. ... | 2006 | 17426773 |
| complex genome rearrangements reveal evolutionary dynamics of pericentromeric regions in the triticeae. | most pericentromeric regions of eukaryotic chromosomes are heterochromatic and are the most rapidly evolving regions of complex genomes. the closely related genomes within hexaploid wheat (triticum aestivum l., 2n=6x=42, aabbdd), as well as in the related triticeae taxa, share large conserved chromosome segments and provide a good model for the study of the evolution of pericentromeric regions. here we report on the comparative analysis of pericentric inversions in the triticeae, including triti ... | 2006 | 17426778 |
| allelic variation of polyphenol oxidase (ppo) genes located on chromosomes 2a and 2d and development of functional markers for the ppo genes in common wheat. | polyphenol oxidase (ppo) activity is highly related to the undesirable browning of wheat-based end products, especially asian noodles. characterization of ppo genes and the development of their functional markers are of great importance for marker-assisted selection in wheat breeding. in the present study, complete genomic dna sequences of two ppo genes, one each located on chromosomes 2a and 2d and their allelic variants were characterized by means of in silico cloning and experimental validati ... | 2007 | 17426955 |
| a qtl on chromosome 6a in bread wheat (triticum aestivum) is associated with longer coleoptiles, greater seedling vigour and final plant height. | wheat crops with greater early vigour shade the soil surface more rapidly and reduce water loss. evaporative losses affect water-use efficiency particularly in drier regions where most of the rainfall occurs early in the growing season before canopy closure. greater seedling leaf area and longer coleoptiles are major determinants of increased vigour and better crop establishment. a previously developed high vigour breeding line 'vigour 18' was used to establish a large recombinant inbred family ... | 2007 | 17429602 |
| molecular genetic improvement of cereals: transgenic wheat (triticum aestivum l.). | only modest progress has been made in the molecular genetic improvement of wheat following the production of the first transgenic plants in 1992, made possible by the development of efficient, long-term regenerable embryogenic cultures derived from immature embryos and use of the biolistics method for the direct delivery of dna into regenerable cells. transgenic lines expressing genes that confer resistance to environmentally friendly non-selective herbicides, and pests and pathogens have been p ... | 0 | 17431631 |
| grinding up wheat: a massive loss of nucleotide diversity since domestication. | several demographic and selective events occurred during the domestication of wheat from the allotetraploid wild emmer (triticum turgidum ssp. dicoccoides). cultivated wheat has since been affected by other historical events. we analyzed nucleotide diversity at 21 loci in a sample of 101 individuals representing 4 taxa corresponding to representative steps in the recent evolution of wheat (wild, domesticated, cultivated durum, and bread wheats) to unravel the evolutionary history of cultivated w ... | 2007 | 17443011 |
| effects of tillage on the activity density and biological diversity of carabid beetles in spring and winter crops. | the effects of tillage regimen (conventional [ct] and no-tillage [nt]) on the activity density and diversity of carabid beetles (coleoptera: carabidae) was studied by pitfall trapping within a rain-fed cropping system in northwestern idaho, 2000-2002. the cropping rotation consisted of a spring cereal (barley, hordeum vulgare l., in 2000 and 2001; and wheat, triticum aestivum l., in 2002), spring dry pea (pisum sativum l.) 2000-2002, and wheat (t. aestivum), spring in 2000 and 2001, and winter i ... | 2007 | 17445370 |
| targeted molecular engineering of a family 11 endoxylanase to decrease its sensitivity towards triticum aestivum endoxylanase inhibitor types. | the bacillus subtilis endoxylanase xyna (bsxy) is frequently used to improve the functionality of arabinoxylan-containing material in cereal based industries. the presence of endogenous triticum aestivum xylanase inhibitors (taxi-i and taxi-ii) in wheat is a real concern as they have a direct negative impact on the efficiency of this enzyme. here, we used the recently determined structure of the complex between taxi-i and an endoxylanase of aspergillus niger to develop inhibitor-insensitive bsxy ... | 2007 | 17445930 |
| role of hydrogen peroxide during the interaction between the hemibiotrophic fungal pathogen septoria tritici and wheat. | hydrogen peroxide (h(2)o(2)) is reported to inhibit biotrophic but benefit necrotrophic pathogens. infection by necrotrophs can result in a massive accumulation of h(2)o(2) in hosts. little is known of how pathogens with both growth types are affected (hemibiotrophs). the hemibiotroph, septoria tritici, infecting wheat (triticum aestivum) is inhibited by h(2)o(2) during the biotrophic phase, but a large h(2)o(2) accumulation occurs in the host during reproduction. here, we infiltrated catalase, ... | 2007 | 17447918 |
| characterization of a cinnamoyl-coa reductase that is associated with stem development in wheat. | cinnamoyl-coa reductase (ccr) is responsible for the coa ester to aldehyde conversion in monolignol biosynthesis, which diverts phenylpropanoid-derived metabolites into the biosynthesis of lignin. to gain a better understanding of lignin biosynthesis and its biological function, a cdna encoding ccr was identified from wheat (triticum aestivum l.), and designated as ta-ccr1. phylogenetic analysis indicated that ta-ccr1 grouped together with other monocot ccr sequences while it diverged from ta-cc ... | 2007 | 17452751 |
| influence of crop residues on trifluralin mineralization in a silty clay loam soil. | trifluralin is typically applied onto crop residues (trash, stubble) at the soil surface, or onto the bare soil surface after the incorporation of crop residues into the soil. the objective of this study was to quantify the effect of the type and amount of crop residues in soil on trifluralin mineralization in a wellwood silty clay loam soil. leaves and stubble of potato (solanum tuberosum) (p); canola (brassica napus) (c), wheat (triticum aestivum) (w), oats (avena sativa), (o), and alfalfa (me ... | 2015 | 17454379 |
| alternative soil quality indices for evaluating the effect of intensive cropping, fertilisation and manuring for 31 years in the semi-arid soils of india. | soil quality assessment provides a tool for evaluating the sustainability of alternative soil management practices. our objective was to develop the most sensitive soil quality index for evaluating fertilizer, farm yard manure (fym), and crop management practices on a semiarid inceptisol in india. soil indicators and crop yield data from a long-term (31 years) fertilizer, manure, and crop rotation (maize, wheat, cowpea, pearl millet) study at the indian agricultural research institute (iari) nea ... | 2008 | 17457684 |
| d hordeins of hordeum chilense: a novel source of variation for improvement of wheat. | the high molecular weight subunits of wheat (triticum aestivum l.) glutenin (hmw-gs) are important in determining the bread-making quality of flour and dough. there is therefore interest in transferring orthologous hmw-gs present in other grass species into wheat by wide crossing in order to extend the range of end use properties. in this work, we have isolated and characterized two genes encoding d hordeins from hordeum chilense (roem. et schult.) lines h1 and h7, representing two ecotypes. the ... | 2007 | 17458535 |
| molecular rearrangement in por macrodomains as a reason for the blue shift of chlorophyllide fluorescence observed after phototransformation. | the activation energy and activation volume of the spectral blue shift subsequent to protochlorophyllide phototransformation (called shibata shift in intact leaves) were studied in prolamellar body (plb) and prothylakoid-(pt)-enriched membrane fractions prepared from dark-grown wheat (triticum aestivum, l.) leaves. the measurements were done at 20, 30 and 40 degrees c and at various pressure values. the activation energy values were 181+/-8 kj mol(-1) and 188+/-6 kj mol(-1) for the plbs and the ... | 2007 | 17459331 |
| suppressive potential of bean (phaseolus vulgaris) flour against five species of stored-product mites (acari: acarididae). | previous research has demonstrated that legume proteins have insecticidal activity against stored-product pests, but activity against stored-product mites has not been tested. a study was therefore conducted to explore the potential of bean, phaseolus vulgaris l., flour as novel botanical acaricide against five species of storage and dust mites: acarus siro l., aleuroglyphus ovatus (troupeau), caloglyphus redickorzevi (zachvatkin), lepidoglyphus destructor (schrank), and tyrophagus putrescentiae ... | 2007 | 17461087 |
| biological responses of wheat (triticum aestivum) plants to the herbicide chlorotoluron in soils. | chlorotoluron is a phenylurea herbicide that is widely used for controlling grass weeds in the land of cereal, cotton and fruit production. however, extensive use of this herbicide may lead to its accumulation in ecosystems, thus inducing the toxicity to crops and vegetables. to assess chlorotoluron-induced toxicity in plants, we performed the experiment focusing on the metabolic adaptation of wheat plants (triticum aestivum) to the chlorotoluron-induced oxidative stress. the wheat plants were c ... | 2007 | 17462703 |
| a single binding site mediates resistance- and disease-associated activities of the effector protein nip1 from the barley pathogen rhynchosporium secalis. | the effector protein nip1 from the barley (hordeum vulgare) pathogen rhynchosporium secalis specifically induces the synthesis of defense-related proteins in cultivars of barley expressing the complementary resistance gene, rrs1. in addition, it stimulates the activity of the barley plasma membrane h(+)-atpase in a genotype-unspecific manner and it induces necrotic lesions in leaf tissues of barley and other cereal plant species. nip1 variants type i and ii, which display quantitative difference ... | 2007 | 17478637 |
| physical mapping and identification of a candidate for the leaf rust resistance gene lr1 of wheat. | lr1 is a dominant leaf rust resistance gene located on chromosome 5dl of bread wheat and the wild species aegilops tauschii. in this study, three polymorphic markers (wr001, wr002, and wr003) were developed from resistance gene analogs (rgas) clustering around the lr1 locus. using these and other markers, lr1 was mapped to a genetic interval of 0.79 cm in ae. tauschii and 0.075 cm in wheat. the caps marker wr003, derived from lr1rga1, co-segregated with lr1 in both mapping populations of wheat a ... | 2007 | 17479240 |
| hemi-nested touchdown pcr combined with primer-template mismatch pcr for rapid isolation and sequencing of low molecular weight glutenin subunit gene family from a hexaploid wheat bac library. | hexaploid wheat (triticum aestivum l.) possesses a large genome that contains 1.6 x 1010 bp of dna. isolation of a large number of gene sequences from complex gene families with a high level of gene sequence identity from genomic dna is therefore difficult and time-consuming. bacterial artificial chromosome (bac) libraries can be useful for such work. here we report on an efficient approach for rapid isolation and sequencing of the low molecular weight glutenin subunit gene family from the 'glen ... | 2007 | 17480230 |
| sucrose regulated expression of a ca2+-dependent protein kinase (tacdpk1) gene in excised leaves of wheat. | sucrose (suc) can influence the expression of a large number of genes and thereby regulates many metabolic and developmental processes. however, the suc sensing and the components of the ensuing signaling transduction pathway leading to the regulation of gene expression are not fully understood. we have shown that protein kinases and phosphatases are involved in the suc induced expression of fructosyltransferase (ft) genes and fructan accumulation by an hexokinase independent pathway in wheat (t ... | 2007 | 17482472 |
| cytokinin promotes catalase and ascorbate peroxidase activities and preserves the chloroplast integrity during dark-senescence. | increased oxidative stress displayed during dark-senescence of wheat leaves (triticum aestivum l.) is caused not only by the increased levels of radicals but also by a loss of antioxidant capacity. mature leaves were incubated in 6-benzylaminopurine (bap 10(-4)m) or water (control) during 6d in the dark. the senescence-delaying effect of bap was associated with the retention of the chloroplast structure, 60% of the initial content of chlorophyll (chl) and 77% of the initial content of protein. b ... | 2007 | 17485137 |
| [introgression of aegilops genetic material into the genome of hexaploid triticale]. | cytological analysis of different meiosis stages was performed in f4 hybrids in comparison with the f1 hybrids obtained through crosses between the hexaploid triticale and genome-substitution forms of aurolata (aabbuu) and aurosis (aabbs(sh)s(sh)) wheat, in which d genome of common wheat aurora was substituted for the genomes of aegilops umbellulata and ae. sharonensis, respectively. it was demonstrated that in f4 the level of bivalent conjugation was substantially higher than the expected one. ... | 2007 | 17486755 |
| kraft mill sludge to improve vegetal production in chilean andisol. | the effect of kraft mill sludge addition (25 to 75 ton/ha) to soil derived from volcanic ashes (andisol) on wheat (triticum aestivum l.cv. puken) biomass production, and in the nutrient absorption by the plants was evaluated. respiration activity and seed germination tests were carried out on the soil/sludge mixtures, in order to evaluate possible toxic effects due to the sludge addition to the soil. soil without sludge was used as a control treatment. the plants were grown in a greenhouse (25 d ... | 2007 | 17486832 |
| response of photosynthetic apparatus to moderate high temperature in contrasting wheat cultivars at different oxygen concentrations. | the photosynthetic responses to moderately high temperatures (38 degrees c, imposed at 21% or 2% o(2) in air and 1500 mumol m(-2) s(-1)) were compared in wheat (triticum aestivum l.) cultivars grown in northern regions of ukraine and expected to be relatively sensitive to high temperatures ('north' cultivars) and in cultivars grown in southern regions and expected to be relatively heat-tolerant ('south' cultivars). heating intact leaves in 21% o(2) for 1 h decreased co(2) assimilation by c. 63% ... | 2007 | 17490996 |
| inheritance and expression of copies of transgenes 1dx5 and 1ax1 in elite wheat (triticum aestivum l.) varieties transferred from transgenic wheat through conventional crossing. | to study the inheritance and expression of multiple copies of transgenes from transgenic wheat lines, three crosses between transgenic wheat lines b72-8-11b and b102-1-2 and chinese elite wheat varieties chuan89-107 and emai18 were carried out. chuan89-107x72-8-11b, chuan89-107x102-1-2 and emai18x72-8-11b, and f(1) plants were selfed or backcrossed to obtain different generation populations. protein analysis in grains of f(1) and f(2) and backcross progenies of bc(1)f(1), bc(1)f(2), bc(1)f(3), b ... | 2007 | 17492135 |
| [the effects of gene rht8 alleles in agronomic traits of winter bread wheat in the conditions of south steppe of the ukraine]. | resistance to frost, winterhardiness, yield and its components were investigated in recombinant-inbred lines f5 odesskaya 16/bezostaya 1 and 61 winter wheat varieties differing on the alleles of rht8 gene. the absence of influence of gene rht8 different alleles on the tested traits was shown. the high frequency of distribution of alleles rht8c in modern wheat varieties developed in plant breeding and genetics institute is a result of high frequency of use of this allele in genetic pool after 195 ... | 2008 | 17494341 |
| occurrence of "mammalian" lignans in plant and water sources. | enterolignans, also called "mammalian" lignans because they are formed in the intestine of mammals after ingestion of plant lignans, were identified for the first time in extracts of four tree species, i.e., in knot heartwood of the hardwood species fagus sylvatica and in knot or stem heartwood of the softwood species araucaria angustifolia, picea smithiana, and abies cilicia. they were also identified for the first time in grain extracts of cultivated plants, i.e., in 15 cereal species, in 3 nu ... | 2007 | 17497165 |
| heat-induced accumulation of chloroplast protein synthesis elongation factor, ef-tu, in winter wheat. | chloroplast protein synthesis elongation factor, ef-tu, has been implicated in heat tolerance in maize (zea mays). chloroplast ef-tu is highly conserved, and it is possible that this protein may be of importance to heat tolerance in other species including wheat (triticum aestivum). in this study, we assessed heat tolerance and determined the relative levels of ef-tu in mature plants (at flowering stage) of 12 cultivars of winter wheat experiencing a 16-d-long heat treatment (36/30 degrees c, da ... | 2008 | 17498838 |
| generation of novel high quality hmw-gs genes in two introgression lines of triticum aestivum/agropyron elongatum. | high molecular weight glutenin subunits (hmw-gs) have been proved to be mostly correlated with the processing quality of common wheat (triticum aestivum). but wheat cultivars have limited number of high quality hmw-gs. however, novel hmw-gs were found to be present in many wheat asymmetric somatic hybrid introgression lines of common wheat/agropyron elongatum. | 2007 | 17502002 |
| dissection of barley chromosome 5h in common wheat. | we dissected barley chromosome 5h added to common wheat by a genetic method or the gametocidal system. firstly, we induced chromosomal breaks in the offspring of a 5h addition line of common wheat carrying a gametocidal chromosome and cytologically screened for plants with structural chromosomal changes involving 5h, such as deletions and translocations. secondly, we screened the progeny of such plants to establish common wheat lines carrying structurally changed chromosomes containing single se ... | 2007 | 17507778 |
| the einkorn wheat (triticum monococcum) mutant, maintained vegetative phase, is caused by a deletion in the vrn1 gene. | the einkorn wheat (triticum monococcum) mutant, maintained vegetative phase (mvp), was induced by nitrogen ion-beam treatment and was identified by its inability to transit from the vegetative to reproductive phase. in our previous study, we showed that wap1 (wheat apetala1) is a key gene in the regulatory pathway that controls phase transition from vegetative to reproductive growth in common wheat. wap1 is an ortholog of the vrn1 gene that is responsible for vernalization insensitivity in einko ... | 2007 | 17507783 |
| complete chloroplast genome sequences of hordeum vulgare, sorghum bicolor and agrostis stolonifera, and comparative analyses with other grass genomes. | comparisons of complete chloroplast genome sequences of hordeum vulgare, sorghum bicolor and agrostis stolonifera to six published grass chloroplast genomes reveal that gene content and order are similar but two microstructural changes have occurred. first, the expansion of the ir at the ssc/ira boundary that duplicates a portion of the 5' end of ndhh is restricted to the three genera of the subfamily pooideae (agrostis, hordeum and triticum). second, a 6 bp deletion in ndhk is shared by agrosti ... | 2007 | 17534593 |
| factors contributing to enhanced freezing tolerance in wheat during frost hardening in the light. | the interaction between light and temperature during the development of freezing tolerance was studied in winter wheat (triticum aestivum l. var. mv emese). ten-day-old plants were cold hardened at 5 degrees c for 12 days under normal (250 micromol m(-2)s(-1)) or low light (20 micromol m(-2)s(-1)) conditions. some of the plants were kept at 20/18 degrees c for 12 days at high light intensity (500 micromol m(-2)s(-1)), which also increased the freezing tolerance of winter wheat. the freezing surv ... | 2007 | 17537468 |
| photosynthetic responses of wheat, triticum aestivum l., to defoliation patterns on individual leaves. | the impact of defoliation by fall armyworm, spodoptera frugiperda (j. e. smith), on the photosynthetic rates of injured, individual wheat, triticum aestivum l., leaves and the impact of different spatial patterns of artificial insect defoliation on photosynthesis of remaining leaf tissue of injured, individual wheat leaves were evaluated in this study. photosynthesis, stomatal conductance, transpiration, and chlorophyll a fluorescence were recorded in the flag-leaves of wheat plants 1 and 24 h a ... | 2007 | 17540071 |