Publications
| Title | Abstract | Year Filter | PMID(sorted ascending) Filter |
|---|
| phytoremediation of oil-sludge-contaminated soil. | the aim of this research was to select plant species that could be effective in the phytoremediation ofa former oil-sludge pit. seven crop plants (triticum aestivum l., secale cereale l., avena sativa l., hordeum vulgare, sorghum bicolor l moench, panicum miliaceum l, and zea mays l.),five wild grasses (lolium perenne l., bromopsis inermis, agropyron cristatum l., agropyrum tenerum l., and festuca pratensis huds.), and three legumes (medicago sativa l., trifolium pratense l., and onobrychis anta ... | 2008 | 19260228 |
| sewage sludge applied to agricultural soil: ecotoxicological effects on representative soil organisms. | application of sewage sludge to agricultural lands is a current practice in eu. european legislation permits its use when concentrations of metals in soil do not increase above the maximum permissible limits. in order to assess the fate and the effects on representative soil organisms of sewage sludge amendments on agricultural lands, a soil microcosm (multi-species soil system-ms3) experiment was performed. the ms3 columns were filled with spiked soil at three different doses: 30, 60 and 120tha ... | 2009 | 19261330 |
| effect of winter cover crops on nematode population levels in north florida. | two experiments were conducted in north-central florida to examine the effects of various winter cover crops on plant-parasitic nematode populations through time. in the first experiment, six winter cover crops were rotated with summer corn (zea mays), arranged in a randomized complete block design. the cover crops evaluated were wheat (triticum aestivum), rye (secale cereale), oat (avena sativa), lupine (lupinus angustifolius), hairy vetch (vicia villosa), and crimson clover (trifolium incarnat ... | 2004 | 19262833 |
| pratylenchus thornei associated with reduced wheat yield in oregon. | pratylenchus thornei reaches high population densities in non-irrigated annual cropping systems in low-rainfall regions of the pacific northwest. two spring wheat varieties with different levels of tolerance and susceptibility to p. thornei were treated or not treated with aldicarb in three experiments. grain yield was inversely correlated (p < 0.05) with pre-plant populations of p. thornei in soil and with p. thornei density in mature roots. as population of p. thornei increased, yield of the m ... | 2005 | 19262842 |
| plant-parasitic nematodes associated with reduced wheat yield in oregon: heterodera avenae. | heterodera avenae is widely distributed in the western united states, where most wheat is grown in non-irrigated winter wheat/summer fallow rotations in low rainfall regions. economic and social pressures have motivated growers to pursue a transition from winter wheat/summer fallow rotation to no-till annual spring cereals. annual cereals are also planted in some irrigated fields. the impact of h. avenae on spring wheat yield in the pacific northwest had been observed but not quantified. spring ... | 2005 | 19262877 |
| nematicides increase grain yields in spring wheat cultivars and suppress plant-parasitic and bacterial-feeding nematodes. | grain yields of spring wheat (triticum aestivum l. cvs. ac barrie, ac walton, ac wilmot, belvedere, glenlea) in field plots over a 3-year period were increased (p < 0.001) by an average of 0.56 (25.1%) and 1.17 (52.5%) tonnes/ha in comparison to untreated check plots when aldicarb at 2.24 kg or fosthiazate at 13.5 a.i./ha, respectively, were broadcast and incorporated into the soil to suppress nematodes. the planned f test using orthogonal coefficients indicated that the mean response of grain y ... | 2005 | 19262893 |
| identification of dreb homologous genes in bread wheat via codehop pcr primer design. | in this study, we exploit the useful described codehop primer design and rt-pcr strategy for targeted isolation of homologues in large gene families. the method was tested with two different objectives. the first was to apply codehop strategy for design degenerate oligonucleotide primers in a broad range of plant species. the second was to isolate an orthologus of the transcription factor of dehydration-responsive element binding protein (dreb) and to determine the complexity of gene family in b ... | 2008 | 19266903 |
| cloning and characterization of cdnas encoding ent-copalyl diphosphate synthases in wheat: insight into the evolution of rice phytoalexin biosynthetic genes. | in vitro assays using recombinant enzymes enabled three cdnas encoding ent-copalyl diphosphate synthases to be identified in wheat (triticum aestivum): tacps1, tacps2, and tacps3. the phylogenetic tree and expression analyses suggest that tacps3 is responsible for gibberellin biosynthesis, while tacps1 and tacps2 are possible functional homologs of diterpene cyclase genes oscps2 and oscps4 involved in phytoalexin biosynthesis in rice. | 2009 | 19270400 |
| survey of crop losses in response to phytoparasitic nematodes in the united states for 1994. | previous reports of crop losses to plant-parasitic nematodes have relied on published results of survey data based on certain commodities, including tobacco, peanuts, cotton, and soybean. reports on crop-loss assessment by land-grant universities and many commodity groups generally are no longer available, with the exception of the university of georgia, the beltwide cotton conference, and selected groups concerned with soybean. the society of nematologists extension committee contacted extensio ... | 1999 | 19270925 |
| damage and reproduction potentials of heterodera avenae on wheat under outdoor conditions. | two pot experiments, in consecutive years, were conducted under outdoor conditions during the wheat growing season to examine the relationship between increasing initial population densities (pi: 0-3,000 cysts/pot) of heterodera avenae and corresponding responses of wheat cv. yecora rojo. results of both experiments were very similar. the nematode suppressed plant height, root and biomass dry weights, and grain yield at all pi's studied. the suppression of these parameters, as well as the final ... | 1999 | 19270933 |
| efficacy of cotton root destruction and winter cover crops for suppression of hoplolaimus columbus. | the efficacy of rye (secale cereale) and wheat (triticum aestivum) winter cover crops and cotton stalk and root destruction (i.e., pulling them up) were evaluated in field tests during two growing seasons for hoplolaimus columbus management in cotton. the effect of removing debris from the field following root destruction also was evaluated. wheat and rye produced similar amounts of biomass, and both crops produced more biomass (p </= 0.05) following cotton root destruction. cover crops did not ... | 2000 | 19271009 |
| [molecular cytogenetics, fertility, and scab resistance of the intergeneric hybrid f1 and bc1 between triticum aestivum and roegneria kamoji]. | the reciprocal intergeneric hybrids between common wheat and roegneria kamoji were successfully obtained by means of embryo culture. morphology, chromosome pairing behavior at meiosis, fertility, and resistance to scab of the hybrid f1 and bc1 were studied. the results showed that the morphology of the reciprocal intergeneric hybrids f1 between r. kamoji and t. aestivum cv. chinese spring were intermediate type between the two parental species. the chromosome configuration at metaphase i (mi) of ... | 2009 | 19273443 |
| are pathogenesis-related proteins induced by meloidogne javanica or heterodera avenae lnvasion? | changes in root- and leaf-soluble proteins were investigated in tomato after invasion by the root-knot nematode meloidogyne javanica, or in barley and wheat after invasion by the cereal cyst nematode heterodera avenae. infection of susceptible tomato plants by m. javanica did not cause any change in the soluble-protein composition of leaves or roots compared with uninoculated plants at an early infection stage. no pathogenesis-related proteins (chitinase, glucanase, or p-14) were induced in the ... | 1997 | 19274187 |
| mapping and proteomic analysis of albumin and globulin proteins in hexaploid wheat kernels (triticum aestivum l.). | albumins and globulins of wheat endosperm represent 20% of total kernel protein. they are soluble proteins, mainly enzymes and proteins involved in cell functions. two-dimensional gel immobiline electrophoresis (2de) (ph 4-7) x sds-page revealed around 2,250 spots. ninety percent of the spots were common between the very distantly related cultivars 'opata 85' and 'synthetic w7984', the two parents of the international triticeae mapping initiative (itmi) progeny. 'opata' had 130 specific spots wh ... | 2009 | 19277600 |
| partial resistance to heterodera avenae in wheat lines with the 6m v chromosome from aegilops ventricosa. | lines of wheat with the 6m(v) chromosome from aegilops ventricosa display partial resistance to both pathotypes hal2 and ha41 of heterodera avenae. with either pathotype, the effect of this alien chromosome on cyst production, size, and fecundity was expressed in resistance tests. partial resistance of five 6m(v)(6d) substitution lines varied according to the intrinsic cyst-forming capacity of the nematode pathotypes and the recipient germplasms. such partial resistance can be utilized in wheat ... | 1993 | 19279767 |
| description and sem observations of meloidogyne sasseri n. sp. (nematoda: meloidogynidae), parasitizing beachgrasses. | meloidogyne sasseri n. sp. is described and illustrated from american beachgrass (ammophila breviliffulata) originally collected from henlopen state park and fenwick island near the maryland state line in delaware, united states (6). its relationship to m. graminis, m. spartinae, and m. californiensis is discussed. primary distinctive characters of the female perineal pattern were a high to rounded arch with shoulders, widely spaced lateral lines interrupting transverse striations, a sunken vulv ... | 1993 | 19279820 |
| interactions between heterodera avenae and pratylenchus neglectus on wheat. | in a long-term field experiment, differential population densities of heterodera avenae were produced by frequent cropping with resistant (cv. panema) or susceptible (cv. peniarth) oat. the two oat cultivars were equally good hosts of pratylenchus neglectus in a glass house experiment with field soil. on wheat crops grown after oats in field experiments, p. neglectus population densities in roots were higher in plots where h. avenae had been controlled than in plots with moderate infestations (4 ... | 1994 | 19279901 |
| [influence of salicylic and succinic acids on the cytophysiological reactions of wheat infected by brown rust]. | the influence of the salicylic and succinic acids on the cytophysiological reactions of the plants and cellular structures of the fungus were investigated using the model of common wheat triticum aestivum l. infected by brown rust. the experiments were performed on seedlings of the isogenic line of var. thatcher with resistant gene lr19. the salicylic and succinic acids accelerated and enhanced to a different extent the generation of active oxygen species and synthesis of callose and phenylpropa ... | 2009 | 19281048 |
| potential errors in electron transport rates calculated from chlorophyll fluorescence as revealed by a multilayer leaf model. | increasingly, photosynthetic electron transport rate is being calculated from chlorophyll fluorescence measurements. the fluorescence signal is a complex mixture of contributions from different depths within the mesophyll. one condition required for electron transport calculated from fluorescence to represent the rate accurately is that the ratio of photosynthetic capacity to light absorbed be constant throughout the leaf. in order to explore the fluorescence properties of leaves where this assu ... | 2009 | 19282373 |
| effect of cropping regime on populations of belonolaimus sp. and pratylenchus scribneri in sandy soil. | the host efficiencies of corn, sorghum, soybean, and wheat were compared for a kansas population of belonolaimus sp. under greenhouse conditions. in a related field study conducted in 1989 and 1990, the responses of belonolaimus sp. and pratylenchus scribneri populations to eight cropping regimes were monitored at depths of 0-30 and 31-60 cm in sandy soil. with the exception of alfalfa, all crop species examined supported substantial increases in populations of both nematodes. largest nematode p ... | 1991 | 19283178 |
| resistance to meloidogyne spp. in allohexaploid wheat derived from triticum turgidum and aegilops squarrosa. | expression of resistance to meloidogyne incognita and m. javanica from aegilops squarrosa was studied in a synthetic allohexaploid produced from triticum turgidum var. durum cv. produra and ae. squarrosa g 3489. the reproductive rate of different races of m. incognita and m. javanica, expressed in eggs per gram of fresh root, was low (p < 0.05) on the synthetic allohexaploid and the resistant parent, ae. squarrosa g 3489, compared with different bread and durum wheat cultivars. reproduction of r ... | 1989 | 19287575 |
| use of chitin for controlling heterodera avenae and tylenchulus semipenetrans. | the nematicidal effect of chitin, relative to other pesticides, was evaluated against two plant-parasitic nematodes, heterodera avenae and tylenchulus semipenetrans. wheat seedlings, grown in soils artificially or naturally infested with h. avenae, were treated with 0.4% (w/w) clandosan (cla) prepared from crustacean chitin, aldicarb (temik 15g), or ethylene dibromide (edb 90ec). the cla treatment significantly increased wheat straw, ear, and average grain dry weights of nematode-infected plants ... | 1989 | 19287630 |
| phytoparasitic nematode surveys of arkansas wheat fields, 1986-1988. | in arkansas wheat is commonly grown either in rotation or double cropped with soybean. surveys from 1986 to 1988 identified 18 phytoparasitic nematode species in arkansas wheat fields. the frequency of occurrence, as a percentage of the total number of samples (199), for the following nematodes was heterodera glycines 43%, quinisulcius acutus 40%, pratylenchus scribneri 37%, helicotylenchus pseudorobustus 15 %, xiphinema americanum 14%, paratylenchus tenuicaudatus 13 %, pratylenchus alleni 10%, ... | 1989 | 19287660 |
| nematicide seed dressing for cyst and lesion nematode control in wheat. | a trial was conducted in the northern negev region of israel in a field heavily infested with both cyst (heterodera avenae) and lesion (pratylenchus mediterraneus) nematodes. wheat (triticum aestivum cv. bet lehem) seeds were coated with either seed-dressing formulation of furathiocarb 10 g a.i./kg seed or emulsifiable concentrate formulations ofcarbofuran 10 g a.i./kg seed or oxamyl 3.6 g a.i./kg seed. untreated seeds served as control. the trial was arranged in a randomized block design with s ... | 1989 | 19287661 |
| resistance in triticum and aegilops spp. to meloidogyne chitwoodi. | two lines of aegilops squarrosa (g 3489 and g 1279) and triticum cultivars anza, cocorit, produra, chinese spring, nugaines, and a synthetic hexaploid were screened for resistance to meloidogyne chitwoodi. reproduction of m. chitwoodi, expressed as eggs per gram root, was low (p < 0.01) on g 3489 and the synthetic hexaploid. reproduction on all other cultivars tested was high although differences (p < 0.01) existed among them. | 1989 | 19287662 |
| suitability of small grains as hosts of meloidogyne species. | seven cultivars of wheat, five of oat, one of rye, and four of barley were tested as hosts for meloidogyne incognita, m. javanica, or m. arenaria under greenhouse conditions where soil temperature ranged from 21 to 34 c. reproduction rates of all nematode species were high on all cultivars, except m. javanica and m. arenaria on 'brooks' and 'florida 501' oat. meloidogyne incognita and m. javanica produced more eggs on roots of 'rutgers' tomato than on cultivars of wheat, oat, rye, or barley. | 1989 | 19287666 |
| reproduction of pratylenchus penetrans on potato and crops grown in rotation with potato. | the relative suitability of potato and crops frequently grown in rotation with potato as hosts for pratylenchus penetrans was evaluated. suitability of rye, wheat, corn, oat, sorgho-sudangrass, and potato were compared in pot studies based on ratios of final population : initial population density and densities of nematodes in roots at harvest. population densities increased more on potato, oat, and corn than on rye, wheat, and sorgho-sudangrass. there were no differences among the four rye cult ... | 1990 | 19287696 |
| effects of planting date, small grain crop destruction, fallow, and soil temperature on the management of meloidogyne incognita. | the effects of planting date, rye (secale cereale cv. wren abruzzi) and wheat (triticura aestivum cv. coker 797), crop destruction, fallow, and soil temperature on managing meloidogyne incognita race 1 were determined in a 2-year study. more m. incognita juveniles (j2) and egg-producing adults were found in roots of rye planted 1 october than in roots of rye planted 1 november and wheat planted 1 november and 1 december. numbers of m. incognita adults with and without egg masses were near or bel ... | 1990 | 19287731 |
| root-knot nematode management and yield of soybean as affected by winter cover crops, tillage systems, and nematicides. | management of meloidogyne incognita on soybean as affected by winter small grain crops or fallow, two tillage systems, and nematicides was studied. numbers of m. incognita did not differ in plots planted to wheat and rye. yields of soybean planted after these crops also did not differ. numbers of m. incognita were greater in fallow than in rye plots, but soybean yield was not affected by the two treatments. soybean yields were greater in subsoil-plant than in moldboard plowed plots. ethylene dib ... | 1987 | 19290104 |
| descriptions of two new species of tylenchorhynchus cobb, 1913 (nematoda: tylenchida), with details on morphology and variation of t. claytoni. | two new species of plant parasitic nematodes (tylenchorhynchus quaidi n. sp. and t. tritici n. sp.) from pakistan are described and illustrated. tylenchorhynchus quaidi n. sp., from soil around roots of potato (solanum tuberosum) from an experimental field of nnrc, karachi, pakistan, is distinguishable from other species by its peculiar sunken dome-shaped head. although similar to t. goffarti, it differs by head shape, areolation of lateral field, ratios a (23-28 vs. 29-37) and c (11-14 vs. 13-2 ... | 1987 | 19290107 |
| influence of edaphic factors and previous crop on pratylenchus spp. population densities in potato. | root and soil samples from commercial potato fields were assayed for nematodes in 1983 and 1984. pratylenchus spp. population densities in suffolk county, new york, were consistently, though not always statistically, higher in potato fields that had been planted to rye or wheat rather than potatoes during the previous growing season. regardless of the previous crop, population densities in the two potato production areas in suffolk county differed significantly: population densities on the south ... | 1987 | 19290111 |
| investigations of the host range of the corn cyst nematode, heterodera zeae, from maryland. | the host range of the corn cyst nematode, heterodera zeae, recently detected in maryland, was investigated. a total of 269 plant entries, representing 68 families, 172 genera, and 204 species, was inoculated with cysts or a mixture of eggs and second-stage juveniles of h. zeae. the host range of the maryland population of h. zeae was limited to plants of the gramineae and included 11 tribes, 33 genera, 42 species, and 77 entries. all 22 corn (zea mays) cultivars tested were hosts. other economic ... | 1987 | 19290286 |
| nematode response to cool season annual graminaceous species and cultivars. | the response of 29 rye, oat, triticale, and wheat cultivars to selected nematode species was determined in the greenhouse. variability in nematode root galling and final nematode population densities in root and soil in response to cool season annual graminaceous crops occurred for spiral (helicotylenchus dihystera), stubby root (paratrichodorus minor), and root-knot (meloidogyne incognita) nematodes. although none of the graminaceous crops supported m. incognita at levels as high as the suscept ... | 1987 | 19290289 |
| characterization of total, free and esterified phytosterols in tetraploid and hexaploid wheats. | dietary plant sterols have received increasing attention in recent years due to their favorable health benefits. the present research focused on quantification of phytosterols as free, esterified and total forms in different tetraploid (5 cultivars of triticum durum desf., 9 cultivars of triticum dicoccon schrank) and hexaploid (5 cultivars of t. aestivum l., 12 cultivars of triticum spelta l.) wheats. tetraploid wheats showed the highest content of total sterol (79.4 and 79.5 mg of sterols /100 ... | 2009 | 19292465 |
| nematode population and community dynamics in soybean-wheat cropping and tillage regimes. | the nematode community structures of various soybean-wheat regimes and of a single-cropped, conventionally tilled soybean regime were studied at two sites in tennessee. each of the 100 nematode species identified in the study was placed in one of five trophic groups, the most diverse being plant parasites (31 species), followed by dorylaimida (26 species), bacterivores (23 species), fungivores (15 species), and predators (5 species). no significant differences in overall diversity and dominance ... | 1984 | 19294042 |
| development of meloidogyne chitwoodi on wheat. | postinfection development of meloidogyne chitwoodi from second-stage juveniles (j2) to mature females and egg deposition on 'nugaines' winter wheat required 105, 51, 36, and 21 days at 10, 15, 20, and 25 c. at 25 c, the j2 induced cavities and hyperplasia in the cortex and apical meristem of root tips with hypertrophy of cortical and apical meristem cell nuclei, 2 and 5 days after inoculation. giant cells induced by late j2 were observed in the stele 10 days after inoculation. clusters of egg-la ... | 1985 | 19294100 |
| influence of selected cultural practices on winter survival of pratylenchus brachyurus and subsequent effects on soybean yield. | planting date of soybean, glycine max, influenced winter survival of pratylenchus brachyurus in microplots at two locations in north carolina. delayed planting resulted in a linear decrease (p = 0.05) in the numbers of p. brachyurus at soybean harvest. effects of planting date on nematode numbers persisted over winter, indicating that survival in the absence of a host is density independent. compared with winter fallow, winter wheat, triticum aestivum, reduced winter survival of p. brachyurus. s ... | 1985 | 19294125 |
| new species of cyst nematode heterodera pakistanensis (nematoda: heteroderidae) attacking wheat in pakistan. | heterodera pakistanensis n. sp., described and illustrated from roots of common wheat (triticum aestivum) from sukkur, sind, pakistan, belongs to the goettingiana group. it is most closely related to h. cyperi golden, rau &cobb, 1962, h. raskii basnet & jayaprakash, 1984, and h. mothi khan &husain, 1965. second-stage juveniles (j2) can be distinguished from h. cyperi j2 by an areolated lateral field with four incisures and shorter stylet, whereas cysts are separated by a more elongated vulva sli ... | 1986 | 19294224 |
| effect of cadmium and salinity stresses on growth and antioxidant enzyme activities of wheat (triticum aestivum l.). | a hydroponics experiment was conducted to investigate the effect of salinity (nacl) and cadmium (cd) stresses on growth, lipid peroxidation, and antioxidant enzyme activities of three wheat cultivars differing in salt tolerance. cd and nacl stresses inhibited plant growth, reduced chlorophyll content, and increased melondialdehyde content and the activities of superoxide dismutase, catalase and peroxidase. the combined effect of nacl and cd on these parameters was larger than both nacl and cd al ... | 2009 | 19294326 |
| influence of meloidogyne chitwoodi and m. hapla on wheat growth. | meloidogyne chitwoodi reduced the growth of winter wheat 'nugaines' directly in relation to nematode density in the greenhouse, the relationship between top dry weight and initial nematode density suggests a tolerance limit of nugaines wheat to m. chitwoodi of between 0.03 and 0.18 eggs/cm(3) of soil; the value for relative minimum plant top weight was 0.45 g and 0.75 g, respectively. growth of wheat in field microplots containing four population densities (0.003, 0.05, 0.75 and 9 eggs/cm(3) soi ... | 1984 | 19295895 |
| effects of soil temperature and planting date of wheat on meloidogyne incognita reproduction, soil populations, and grain yield. | wheat cultivars anza and produra grown in winter in california were planted in meloidogyne incognita infested and noninfested sandy loam plots in october (soil temperature 21 c) and november (soil temperature 16 c) of 1979. meloidogyne incognita penetrated roots of mid-october planted ataza (427 juveniles/g root), developed into adult females by january, and produced 75 eggs/g root by harvest in april. penetration and development did not occur in late plantings. anza seedlings grown in infested ... | 1981 | 19300773 |
| the development and influence of meloidogyne incognita and m. javanica on wheat. | the effects of soil temperature and initial inoculum density (pi) of meloidogyne incognito and m. javanica on growth of wheat (triticum aestivum cv. anza) and nematode reproduction were studied in controlled temperature baths in the glasshouse. nematode reproduction was directly proportional to temperature between 14 and 30 c for m. incognita and between 18 and 26 c for m. javanica. reproduction rates (pf/pi, where pf = final number of eggs) for pi's of 3,000, 9,000, and 30,000 eggs/plant were g ... | 1981 | 19300774 |
| suppressive effect of magnesium oxide materials on cadmium accumulation in winter wheat grain cultivated in a cadmium-contaminated paddy field under annual rice-wheat rotational cultivation. | the effectiveness of two kinds of magnesium oxide (mgo) materials, commercial mgo (2250 kg ha(-1)) and a material derived from mgo and magnesium silicate minerals named 'mgo-sh-a' (2250 and 4500 kg ha(-1)1), in suppression of uptake and accumulation of cadmium (cd) into grain of winter wheat (triticum aestivum l. cv. ayahikari) was examined in a cd-contaminated alluvial paddy field under annual rice-wheat rotational system. the mgo materials were mixed into the plough-layer soil only once prior ... | 2009 | 19304384 |
| the molecular biology of seasonal flowering-responses in arabidopsis and the cereals. | in arabidopsis (arabidopsis thaliana), flowering locus t (ft) and flowering locus c (flc) play key roles in regulating seasonal flowering-responses to synchronize flowering with optimal conditions. ft is a promoter of flowering activated by long days and by warm conditions. flc represses ft to delay flowering until plants experience winter. | 2009 | 19304997 |
| behavioral response of nothanguina phyllobia to selected plant species. | the silver-leaf nightshade nenmtode, nothanguina phyllobia, is a promising biological control agent for its only reported host, solanum elaeagnifolium cav. when infective larvae of n. phyllobia and stem tissue of 39 econmnically important plant species were suspended in 0.5% water agar, nematodes aggregated about s. elaeagnifolium, solanum carolinense l., solanum melongena l., solanum tuberosum l., and prunus caroliniana (mill.) ait. nematodes responded to solanum spp. via positive chemotaxis an ... | 1979 | 19305532 |
| evaluation of a seed-treatment method with acetone for delivering systemic nematicides with wheat and rye. | seeds of 'coker 68-15' wheat and 'maton' rye were immersed for 5 min in acetone solutions of oxamyl, carbofuran, or phenamiphos containing 0, 0.25, 0.5, 1.25, 2.5, or 5.0% (w/v) nematicide; after drying, seeds were planted in pots containing 500 gm of sandy loam naturally infested with hoplolaimus galeatus and tylenchorhynchus claytoni. in sterilized soil, only the 5% concentrations of all nematicides were toxic to rye, whereas both the 2.5 and 5% concentrations were damaging to wheat. phenamiph ... | 1977 | 19305616 |
| [molecular cytogenetic identification of aegilops ventricosa x aegilops cylindrica amphiploid sdau18]. | sdau18, an amphiploid of ae.ventricosa with ae.cylindrica, was identified by cytological analysis, seed storage protein electrophoresis, genomic in situ hybridization (gish) and inoculation assessment. the results are as follows: the chromosome number of root tip cells (rtcs) of sdau18 plants varied from 52 to 56. 28 bivalents were observed in most pmcs mi of sdau18 with 56 chromosomes, meanwhile, a few univalents, multivalents also existed in some pmcs mi, and the average chromosome configurati ... | 2009 | 19306684 |
| variety-specific response of wheat (triticum aestivum l.) leaf mitochondria to drought stress. | the main objective of the present work was to examine leaf respiratory responses to dehydration and subsequent recovery in three varieties of winter wheat (triticum aestivum l.) known to differ in their level of drought tolerance. under dehydration, both total respiration and salicylhydroxamic acid (sham)-resistant cytochrome (cyt) pathway respiration by leaf segments decreased significantly compared with well-watered plants. this decrease was more pronounced in the drought-sensitive sadovo and ... | 2009 | 19319627 |
| roles of morphology, anatomy, and aquaporins in determining contrasting hydraulic behavior of roots. | the contrasting hydraulic properties of wheat (triticum aestivum), narrow-leafed lupin (lupinus angustifolius), and yellow lupin (lupinus luteus) roots were identified by integrating measurements of water flow across different structural levels of organization with anatomy and modeling. anatomy played a major role in root hydraulics, influencing axial conductance (l(ax)) and the distribution of water uptake along the root, with a more localized role for aquaporins (aqps). lupin roots had greater ... | 2009 | 19321713 |
| family-based mapping of quantitative trait loci in plant breeding populations with resistance to fusarium head blight in wheat as an illustration. | traditional quantitative trait loci (qtl) mapping approaches are typically based on early or advanced generation analysis of bi-parental populations. a limitation associated with this methodology is the fact that mapping populations rarely give rise to new cultivars. additionally, markers linked to the qtl of interest are often not immediately available for use in breeding and they may not be useful within diverse genetic backgrounds. use of breeding populations for simultaneous qtl mapping, mar ... | 2009 | 19322557 |
| saturation and comparative mapping of the genomic region harboring hessian fly resistance gene h26 in wheat. | resistance gene h26, derived from aegilops tauschii coss., is one of the most effective r genes against the hessian fly [mayetiola destructor (say)], an important pest of wheat (triticum aestivum l.). using a limited number of pcr-based molecular markers a previous study mapped h26 to the wheat chromosomal deletion bin 3dl3-0.81-1.00. the objectives of this study were to saturate the chromosomal region harboring h26 with newly developed pcr-based markers and to investigate the collinearity of th ... | 2009 | 19322558 |
| transcriptome pathways unique to dehydration tolerant relatives of modern wheat. | among abiotic stressors, drought is a major factor responsible for dramatic yield loss in agriculture. in order to reveal differences in global expression profiles of drought tolerant and sensitive wild emmer wheat genotypes, a previously deployed shock-like dehydration process was utilized to compare transcriptomes at two time points in root and leaf tissues using the affymetrix genechip(r) wheat genome array hybridization. the comparison of transcriptomes reveal several unique genes or express ... | 2009 | 19330365 |
| [genetic diversity of local spring soft wheats (triticum aestivum l.) of west and east siberia in gliadin genes]. | a considerable polymorphism in gliadin genes was detected in the local wheats of west siberia (altai krai, omsk oblast, and kurgan oblast) and the local cultivars characteristic of several east siberian regions (krasnoyarsk krai, irkutsk oblast, tuva, and yakutia), and the genetic formulas were determined. the common alleles characteristic of the wheats of both regions were detected, namely, gli-a1f, gli-a1j, gli-a1i, gli-a1m, gli-b1e, gli-b1m, gli-d1a, gli-a2q, gli-a2k, gli-a2u, gli-d2a, and gl ... | 2009 | 19334616 |
| the three classes of wheat xylanase-inhibiting proteins accumulate in an analogous way during wheat ear development and germination. | wheat contains high levels of the three classes of xylanase inhibitors (xis), triticum aestivum xylanase inhibitor (taxi), xylanase-inhibiting protein (xip) and thaumatin-like xylanase inhibitor (tlxi). these proteins have been linked to plant defense. in this study, expression of xis during wheat ear development and germination was examined using immunoblotting. the three types of xis accumulated at high levels between the milky and the soft dough stages of ear development, and reached the high ... | 2009 | 19339078 |
| decorrelating source and sink determinism of nitrogen remobilization during grain filling in wheat. | nitrogen (n) remobilization is the major source of n for grain filling in wheat, the other being n uptake after anthesis (n(up)); however, variations in remobilization efficiency are not fully understood. it is hard to tell whether the source or the sink effects predominate, because n in the culm at anthesis (n(ant)) correlates strongly with both n remobilization (n(rem)) and grain number (g(n)), respectively the main source and the main sink. | 2009 | 19339296 |
| the characterization and geographical distribution of the genes responsible for vernalization requirement in chinese bread wheat. | the frequency and distribution of the major vernalization requirement genes and their effects on growth habits were studied. of the 551 bread wheat genotypes tested, seven allelic combinations of the three vrn-1 genes were found to be responsible for the spring habit, three for the facultative habit and one for the winter habit. the three vrn-1 genes behaved additively with the dominant allele of vrn-a1 exerting the strongest effect. the allele combinations of the facultative genotypes and the d ... | 2009 | 19341410 |
| timing and biosynthetic potential for carotenoid accumulation in genetically diverse germplasm of maize. | enhancement of the carotenoid biosynthetic pathway in food crops benefits human health and adds commercial value of natural food colorants. however, predictable metabolic engineering or breeding is limited by the incomplete understanding of endogenous pathway regulation, including rate-controlling steps and timing of expression in carotenogenic tissues. the grass family (poaceae) contains major crop staples, including maize (zea mays), wheat (triticum aestivum), rice (oryza sativa), sorghum (sor ... | 2009 | 19346441 |
| basal expression studies of cystatins during specific growth stages of wheat spikes for defining their possible role in differential and stage dependent immunity against karnal bunt (tilletia indica). | two genotypes showing differential immunity against karnal bunt (tilletia indica) were used to investigate the role of three members of cystatin gene family in growth stage dependent immunity in wheat (triticum aestivum l.). three members of cystatin gene family (wc1, wc2, and wc4) were cloned and sequenced. analysis of sequenced data showed that there was 76-99% nucleotide and protein sequence identity between different genes of the wheat cystatin. in silico amino acid sequence analysis reveale ... | 2010 | 19347606 |
| removing celiac disease-related gluten proteins from bread wheat while retaining technological properties: a study with chinese spring deletion lines. | gluten proteins can induce celiac disease (cd) in genetically susceptible individuals. in cd patients gluten-derived peptides are presented to the immune system, which leads to a cd4+ t-cell mediated immune response and inflammation of the small intestine. however, not all gluten proteins contain t-cell stimulatory epitopes. gluten proteins are encoded by multigene loci present on chromosomes 1 and 6 of the three different genomes of hexaploid bread wheat (triticum aestivum) (aabbdd). | 2009 | 19351412 |
| comparative rflp mapping of the chlorotoluron resistance gene (su1) in cultivated wheat (triticum aestivum) and wild wheat (triticum dicoccoides). | chlorotoluron is a selective phenylurea herbicide widely used for broad-leaved and annual grass weed control in cereals. variation in the response to chlorotoluron (ct) was found in both hexaploid bread wheat (triticum aestivum l.) and wild tetraploid wheat (triticum dicoccoides körn.). here, we describe the comparative mapping of the ct resistance gene (su1) on chromosome 6b in bread and wild wheat using rflp markers. in bread wheat, mapping was based on 58 f(4) single-seed descent (ssd) plants ... | 0 | 19352744 |
| flow cytometric analysis of the chromosomes and stability of a wheat cell-culture line. | a rapidly growing, long-term suspension culture derived from triticum aestivum l. (wheat) was synchronized using hydroxyurea and colchicine, and a chromosome suspension with 2-3 x 10(6) chromosomes ml(-1) was made. after staining with the dna-specific fluorochromes hoechst 33258 and chromomycin a(3), univariate and bivariate flow-cytometry histograms showed 15 clearly resolved peaks corresponding to individual chromosome types or groups of chromosomes with similar dna contents. the flow karyotyp ... | 0 | 19352750 |
| the influence of vernalization and daylength on expression of flowering-time genes in the shoot apex and leaves of barley (hordeum vulgare). | responses to prolonged low-temperature treatment of imbibed seeds (vernalization) were examined in barley (hordeum vulgare). these occurred in two phases: the perception of prolonged cold, which occurred gradually at low temperatures, and the acceleration of reproductive development, which occurred after vernalization. expression of the vernalization1 gene (hvvrn1) increased gradually in germinating seedlings during vernalization, both at the shoot apex and in the developing leaves. this occurre ... | 0 | 19357429 |
| simultaneous selection of major and minor genes: use of qtl to increase selection efficiency of coleoptile length of wheat (triticum aestivum l.). | plant breeders simultaneously select for qualitative traits controlled by one or a small number of major genes, as well as for polygenic traits controlled by multiple genes that may be detected as quantitative trait loci (qtl). in this study, we applied computer simulation to investigate simultaneous selection for alleles at both major and minor gene (as qtl) loci in breeding populations of two wheat parental lines, hm14bs and sunstate. loci targeted for selection included six major genes affect ... | 2009 | 19360392 |
| mitochondrial and nuclear localization of a novel pea thioredoxin: identification of its mitochondrial target proteins. | plants contain several genes encoding thioredoxins (trxs), small proteins involved in the regulation of the activity of many enzymes through dithiol-disulfide exchange. in addition to chloroplastic and cytoplasmic trx systems, plant mitochondria contain a reduced nicotinamide adenine dinucleotide phosphate-dependent trx reductase and a specific trx o, and to date, there have been no reports of a gene encoding a plant nuclear trx. we report here the presence in pea (pisum sativum) mitochondria an ... | 2009 | 19363090 |
| evolution of new disease specificity at a simple resistance locus in a crop-weed complex: reconstitution of the lr21 gene in wheat. | the wheat leaf-rust resistance gene lr21 was first identified in an iranian accession of goatgrass, aegilops tauschii coss., the d-genome donor of hexaploid bread wheat, and was introgressed into modern wheat cultivars by breeding. to elucidate the origin of the gene, we analyzed sequences of lr21 and lr21 alleles from 24 wheat cultivars and 25 accessions of ae. tauschii collected along the caspian sea in iran and azerbaijan. three basic nonfunctional lr21 haplotypes, h1, h2, and h3, were identi ... | 2009 | 19364806 |
| assignment of aegilops variabilis eig chromosomes and translocations carrying resistance to nematodes in wheat. | the allotetraploid species aegilops variabilis eig (2n = 28, uusvsv) belongs to the tribe triticeae and is closely related to wheat. one accession, ae. variabilis no. 1, was found to be resistant to the cereal cyst nematode (ccn) and the root-knot nematode (rkn). as the genetic variability for resistance to those two pests is limited within wheat, this accession was crossed to bread wheat. previous work enabled the development of two addition lines and two translocation lines carrying resistance ... | 2009 | 19370089 |
| molecular cytogenetic and agronomic characterization of advanced generations of wheat x triticale hybrids resistant to diuraphis noxia (mordvilko): application of gish and microsatellite markers. | the pi 386148 triticale from russia is among the highest resistant line to the russian wheat aphid (rwa) (diuraphis noxia (mordvilko)). this triticale line was used as the male parent in crosses with lamar wheat (triticum aestivum l.). the f1 plants were backcrossed to lamar wheat. the progenies were tested for rwa biotype 1 reaction for at least eight backcross and selfing generations. five lines from these selections were identified for their resistance to the rwa and their seeds were increase ... | 2009 | 19370091 |
| arsenate toxicity for wheat and lettuce in six chinese soils with different properties. | to assess soil arsenic (as, in the form of arsenate) toxicity to plants, 6-d root elongation tests on wheat (triticum aestivum l.) and lettuce (lactuca sativa) were conducted in six chinese soils freshly spiked with as. plants were treated with 7 or 10 levels of as to establish concentration-effect curves. median effective concentration and 10% effective concentration values were derived with regression analysis to measure as toxic potencies, and no-observed-effect concentration was determined b ... | 2009 | 19379017 |
| [marker characters of variation induced in triticum aestivum l. by nicotinic acid]. | a search for markers of epigenetic variability in spring common wheat form genotroph-1, obtained after the treatment of seeds and growing plants of spring common wheat cultivar kazakhstanskaya-126 with nicotinic acid of innate origin (0.1-0.01% water solutions), and in a winter wheat line gostianum-88 along with a common wheat cultivar alem obtained on the basis of genotroph-1 was conducted under laboratory conditions. the possibility of using isoenzymes as markers for studying variation induced ... | 2009 | 19382687 |
| [a study of the storage proteins in the introgression lines of common wheat (triticum aestivum l. x t. timopheevii zhuk.) resistant to brown leaf rust]. | storage proteins, prolamins, were studied in ten introgression lines of common wheat bred with involvement of triticum timopheevii zhuk. and five commercial hexaploid wheat cultivars. the lines are resistant to leaf rust. a comparative analysis of the storage proteins in the triticum aestivum l. introgression lines and the parental forms allowed us to (1) detect the active genes of prolamins on the chromosomes homeologous groups 1 and 6 in the introgression lines of t. aestivum and t. timopheevi ... | 2009 | 19382688 |
| the gamma-gliadin multigene family in common wheat (triticum aestivum) and its closely related species. | the unique properties of wheat flour primarily depend on gluten, which is the most important source of protein for human being. gamma-gliadins have been considered to be the most ancient of the wheat gluten family. the complex family structure of gamma-gliadins complicates the determination of their function. moreover, gamma-gliadins contain several sets of celiac disease epitopes. however, no systematic research has been conducted yet. | 2009 | 19383144 |
| differential protection of ethylenediurea (edu) against ambient ozone for five cultivars of tropical wheat. | the antiozonant edu (ethylenediurea) was used to assess the impact of ambient o(3) under field conditions on five cultivars of tropical wheat (triticum aestivum l.). edu solution (0 ppm and 400 ppm) was applied as soil drench (100 ml plant(-1)) 10 days after germination (dag) at an interval of 12 days. edu-treated plants showed significant increments in stomatal conductance, photosynthetic rate, variable fluorescence, total chlorophyll, ascorbic acid, proline and protein contents and protective ... | 2013 | 19386404 |
| water movement into dormant and non-dormant wheat (triticum aestivum l.) grains. | the movement of water into harvest-ripe grains of dormant and non-dormant genotypes of wheat (triticum aestivum l.) was investigated using magnetic resonance micro-imaging (mrmi). images of virtual sections, both longitudinal and transverse, throughout the grain were collected at intervals after the start of imbibition and used to reconstruct a picture of water location within the different grain tissues and changes over time. the observations were supplemented by the weighing measurements of wa ... | 2009 | 19386615 |
| low crop plant population densities promote pollen-mediated gene flow in spring wheat (triticum aestivum l.). | transgenic wheat is currently being field tested with the intent of eventual commercialization. the development of wheat genotypes with novel traits has raised concerns regarding the presence of volunteer wheat populations and the role they may play in facilitating transgene movement. here, we report the results of a field experiment that investigated the potential of spring wheat plant population density and crop height to minimize gene flow from a herbicide-resistant (hr) volunteer population ... | 2009 | 19387859 |
| survey of stink bug (hemiptera: pentatomidae) egg parasitoids in wheat, soybean, and vegetable crops in southeast virginia. | stink bugs (hemiptera: pentatomidae) cause significant damage to many different crops and horticultural commodities in virginia. however, little is known about the species diversity or impact of stink bug egg parasitoids in the state. a survey was conducted in 2005 and 2006 (may through september) in wheat (triticum aestivum l.), soybean (glycine max l.), and several vegetable crops by collecting natural egg masses of various stink bug species and by monitoring sentinel egg masses. a total of 57 ... | 2009 | 19389285 |
| delayed wheat flag leaf senescence due to removal of spikelets is associated with increased activities of leaf antioxidant enzymes, reduced glutathione/oxidized glutathione ratio and oxidative damage to mitochondrial proteins. | removal of reproductive 'sink' i.e. spikelets from wheat at anthesis delays the rate of flag leaf senescence. in this work, the antioxidant defense was studied in the flag leaf of triticum aestivum cv. kalyansona plants showing normal (s + plants) and delayed senescence via removal of spikelets (s- plants). this was done by measurement of metabolites and activities of enzymes such as superoxide dismutase, catalase, guaiacol peroxidase, ascorbate peroxidase, monodehydroascorbate reductase, dehydr ... | 2009 | 19394842 |
| identification of novel qtls for seedling and adult plant leaf rust resistance in a wheat doubled haploid population. | pyramiding of genes that confer partial resistance is a method for developing wheat (triticum aestivum l.) cultivars with durable resistance to leaf rust caused by puccinia triticina. in this research, a doubled haploid population derived from the cross between the synthetic hexaploid wheat (shw) (xaegilotriticum spp.) line ta4152-60 and the north dakota breeding line nd495 was used for identifying genes conferring partial resistance to leaf rust in both the adult plant and seedling stages. five ... | 2009 | 19396420 |
| scarlet-rz1, an ems-generated hexaploid wheat with tolerance to the soilborne necrotrophic pathogens rhizoctonia solani ag-8 and r. oryzae. | the necrotrophic root pathogens rhizoctonia solani ag-8 and r. oryzae cause rhizoctonia root rot and damping-off, yield-limiting diseases that pose barriers to the adoption of conservation tillage in wheat production systems. existing control practices are only partially effective, and natural genetic resistance to rhizoctonia has not been identified in wheat or its close relatives. we report the first genetic resistance/tolerance to r. solani ag-8 and r. oryzae in wheat (triticum aestivum l. em ... | 2009 | 19407984 |
| identification and genetic mapping of pm42, a new recessive wheat powdery mildew resistance gene derived from wild emmer (triticum turgidum var. dicoccoides). | powdery mildew, caused by blumeria graminis f. sp. tritici, is one of the most important wheat diseases worldwide in areas with cool or maritime climates. wild emmer (triticum turgidum var. dicoccoides) is an important potential donor of disease resistances and other traits for common wheat improvement. a powdery mildew resistance gene was transferred from wild emmer accession g-303-1m to susceptible common wheat by crossing and backcrossing, resulting in inbred line p63 (yanda1817/g-303-1 m//3* ... | 2009 | 19407985 |
| the c-glycosylation of flavonoids in cereals. | flavonoids normally accumulate in plants as o-glycosylated derivatives, but several species, including major cereal crops, predominantly synthesize flavone-c-glycosides, which are stable to hydrolysis and are biologically active both in planta and as dietary components. an enzyme (oscgt) catalyzing the udp-glucose-dependent c-glucosylation of 2-hydroxyflavanone precursors of flavonoids has been identified and cloned from rice (oryza sativa ssp. indica), with a similar protein characterized in wh ... | 0 | 19411659 |
| dissection of barley chromosome 3h in common wheat and a comparison of 3h physical and genetic maps. | we used the gametocidal system to dissect a barley chromosome 3h added to common wheat. the gametocidal system induced chromosomal structural changes in the 3h addition line of common wheat, and we cytologically screened for rearranged chromosomes involving the 3h chromosome by in situ hybridization (fish/gish). we established 50 common wheat lines carrying single rearranged (or dissected) 3h chromosomes of independent origin. the dissected 3h chromosomes were either deletions or translocations ... | 2009 | 19420798 |
| comparative expression of cbf genes in the triticeae under different acclimation induction temperatures. | in plants, the c-repeat binding factors (cbfs) are believed to regulate low-temperature (lt) tolerance. however, most functional studies of cbfs have focused on characterizing expression after an lt shock and have not quantified differences associated with variable temperature induction or the rate of response to lt treatment. in the triticeae, rye (secale cereale l.) is one of the most lt-tolerant species, and is an excellent model to study and compare cbf lt induction and expression profiles. ... | 0 | 19421778 |
| molecular markers based identification of diversity for drought tolerance in bread wheat varieties and synthetic hexaploids. | the complexity of the wheat genome has delayed the development and application of molecular markers to this species and wheat now lies behind barley, maize and rice in marker development. however, improvements in marker detection systems and in the techniques used to identify markers linked to useful traits has allowed considerable advances to be made in recent years. to evaluate the genetic diversity 53 genotypes of richard's selection, were studied at national agriculture reseach center (narc) ... | 2009 | 19430030 |
| meta-qtl analysis of the genetic control of ear emergence in elite european winter wheat germplasm. | variation in ear emergence time is critical for the adaptation of wheat (triticum aestivum l.) to specific environments. the aim of this study was to identify genes controlling ear emergence time in elite european winter wheat germplasm. four doubled haploid populations derived from the crosses: avalon x cadenza, savannah x rialto, spark x rialto, and charger x badger were selected which represent diversity in european winter wheat breeding programmes. ear emergence time was recorded as the time ... | 2009 | 19430758 |
| neuroprotective effects of triticum aestivum l. against beta-amyloid-induced cell death and memory impairments. | beta-amyloid (a beta) is a key component of senile plaques, neuropathological hallmarks of alzheimer's disease (ad) and has been reported to induce cell death via oxidative stress. this study investigated the protective effects of triticum aestivum l. (tal) on a beta-induced apoptosis in sh-sy5y cells and cognitive dysfunctions in sprague-dawley (sd) rats. cells treated with a beta exhibited decreased viability and apoptotic features, such as dna fragmentation, alterations in mitochondria and an ... | 2010 | 19441012 |
| effects of heavy-ion beams on chromosomes of common wheat, triticum aestivum. | to investigate the nature of plant chromosomes irradiated by heavy-ion beams, the effects of nitrogen (n) and neon (ne) ion beams on hexaploid wheat chromosomes were compared with those of x-ray. chromosome aberrations, such as short, ring and dicentric chromosomes appeared in high frequency. the average numbers of chromosome breaks at ld-50 by irradiation with x-ray, n and ne ion beams were 32, 20 and 20, respectively. these values may be underestimated because chromosome rearrangement without ... | 2009 | 19442674 |
| a host-selective toxin of pyrenophora tritici-repentis, ptr toxa, induces photosystem changes and reactive oxygen species accumulation in sensitive wheat. | ptr toxa (toxa) is a proteinaceous necrotizing host-selective toxin produced by pyrenophora tritici-repentis, a fungal pathogen of wheat (triticum aestivum). in this study, we have found that treatment of toxa-sensitive wheat leaves with toxa leads to a light-dependent accumulation of reactive oxygen species (ros) that correlates with the onset of necrosis. furthermore, the accumulation of ros and necrosis could be inhibited by the antioxidant n-acetyl cysteine, providing further evidence that r ... | 2009 | 19445591 |
| ecotoxicological effects of paracetamol on seed germination and seedling development of wheat (triticum aestivum l.). | in order to assess ecological risk of pharmaceutical compounds entering into agricultural ecosystems, toxic effects of paracetamol with therapeutic action on wheat (triticum aestivum l.) were investigated as an example, using early growing and developmental indexes of wheat, including seed germination, shoot height and root length, peroxidase, superoxide dismutase, chlorophyll, and soluble protein in the seedlings. the results showed that wheat shoot and root elongation decreased significantly ( ... | 2009 | 19446955 |
| induction and transmission of wheat-haynaldia villosa chromosomal translocations. | in order to develop more wheat-haynaldia villosa translocations involving different chromosomes and chromosome segments of h. villosa, t. durum-h. villosa amphiploid was irradiated with 60co gamma-rays at doses of 800, 1,200, and 1,600 rad. pollen collected from the spikes 1, 2, and 3 days after irradiation were transferred to emasculated spikes of the common wheat cv. 'chinese spring'. genomic in situ hybridization was used to identify wheat-h. villosa chromosome translocations in the m1 genera ... | 2009 | 19447380 |
| trifldb: a database of clustered full-length coding sequences from triticeae with applications to comparative grass genomics. | the triticeae full-length cds database (trifldb) contains available information regarding full-length coding sequences (cdss) of the triticeae crops wheat (triticum aestivum) and barley (hordeum vulgare) and includes functional annotations and comparative genomics features. trifldb provides a search interface using keywords for gene function and related gene ontology terms and a similarity search for dna and deduced translated amino acid sequences to access annotations of triticeae full-length c ... | 2009 | 19448038 |
| qtl-specific microarray gene expression analysis of wheat resistance to fusarium head blight in sumai-3 and two susceptible nils. | fusarium head blight, predominantly caused by fusarium graminearum (schwabe) in north america, is a destructive disease that poses a serious threat to wheat (triticum aestivum l.) production around the world. cdna microarrays consisting of wheat ests derived from a wheat - f. graminearum interaction suppressive subtractive hybridization library were used to investigate qtl-specific differential gene expression between the resistant chinese cultivar sumai-3 and two susceptible near isogenic lines ... | 2009 | 19448721 |
| development of triticum aestivum-leymus racemosus translocation lines using gametocidal chromosomes. | specific chromosomes of certain aegilops species introduced into wheat genome background may often facilitate chromosome breakage and refusion, and finally result in a variety of chromosome restructuring. such a phenomenon is commonly called gametocidal effect of the chromosomes. the chromosome 2c of ae. cylindrica is one of such chromosomes. in the present study, scab resistant wheat-l. racemosus addition lines involving chromosomes lr.2 and lr.7 were crossed to wheat-ae. cylindrica disomic add ... | 2003 | 19448992 |
| virulence analysis of hessian fly populations from texas, oklahoma, and kansas. | in recent years, the number of wheat, triticum aestivum l., fields heavily infested by hessian fly, mayetiola destructor (say), has increased in the great plains of the united states. historically, resistance genes in wheat have been the most efficient means of controlling this insect pest. to determine which resistance genes are still effective in this area, virulence of six hessian fly populations from texas, oklahoma, and kansas was determined, using the resistance genes h3, h4, h5, h6, h7h8, ... | 2009 | 19449660 |
| differentiation of molecular genotypes and virulence phenotypes of puccinia triticina from common wheat in north america. | wheat leaf rust caused by puccinia triticina is widely distributed in the wheat growing regions of the united states and canada, and is subject to selection for virulence phenotype by leaf rust resistance genes in wheat cultivars. the objective of this study was to determine the number of genetically differentiated groups of p. triticina that are currently present in north america. in total, 148 isolates of p. triticina from the 1980s to 2005 were collected from wheat-growing regions of the unit ... | 2009 | 19453235 |
| defense strategy of old and modern spring wheat varieties during soil drying. | different defense mechanisms of three spring wheat (triticum aestivum l.) varieties were studied by withholding watering in well-watered pots to gradually increase water deficit of plants grown in containers. the strategies of plant adaptation were divided into three phases according to the severity of drought: first, a positive defense phase that started from commencement of non-hydraulic root-sourced signals (nhrs) and ended at onset of hydraulic root-sourced signals (hrs)--the plant responded ... | 2009 | 19453498 |
| dissimilar molecular defense responses are elicited in triticum aestivum after infestation by different diuraphis noxia biotypes. | for sustainable solutions to the problem of insect infestation, the study of molecular plant-insect interactions is integral to resistance breeding strategies. this also holds true in the case of wheat (triticum aestivum), where the russian wheat aphid (diuraphis noxia, kurdjumov, rwa) is responsible for significant crop losses in most major wheat producing countries around the world. our study is focused on gaining a greater understanding of the resistance mechanisms activated by the rwa resist ... | 2009 | 19453509 |
| study on programmed cell death and dynamic changes of starch accumulation in pericarp cells of triticum aestivum l. | features of programmed cell death (pcd) and dynamic changes of starch accumulation in developing pericarp cells of wheat (triticum aestivum l.) were observed and analyzed by periodic acid-schiff/toluidine blue o double staining, fluorescence staining, terminal deoxynucleotidyl transferase-mediated fluorescein deoxyuridine triphosphate nick-end labeling (tunel) and transmission electron microscopy. the results showed that cellular organelles were orderly disintegrated. tunel-positive nuclei were ... | 2009 | 19455280 |
| algerian pearl millet ( pennisetum glaucum l.) contains xip but not taxi and tlxi type xylanase inhibitors. | an xip (xylanase inhibiting protein) type xylanase inhibitor was purified from algerian pearl millet ( pennisetum glaucum l.) grains and characterized for the first time. cation exchange and affinity chromatography with immobilized trichoderma longibrachiatum glycoside hydrolase (gh) family 11 xylanase resulted in electrophoretically pure protein with a molecular mass of 27-29 kda and a pi value of 6.7. the experimentally determined n-terminal amino acid sequence of the purified xip protein is 8 ... | 2009 | 19459708 |
| leaching and utilization of nitrogen during a spring wheat catch crop succession. | an experiment covering a 2-yr spring wheat (triticum aestivum l.) catch crop succession was conducted in lysimeters to account for the losses of n due to leaching. we sought to relate these losses to the n uptake of the main crop and to integrate the estimated n loss and uptake into a balance. the non-winter hardy catch crops [yellow mustard (sinapis alba l.), phacelia (phacelia tanacetifolia benth), and sunflower (helianthus annuus l.)] as well as bare soil fallow were studied at low and high n ... | 2013 | 19465716 |
| transgenic approach to improve wheat (triticum aestivum l.) nutritional quality. | an amaranth (amaranthus hypochondriacus) albumin gene, encoding the 35-kda ama1 protein of the seed, with a high content of essential amino acids, was used in the biolistic transformation of bread wheat (triticum aestivum l.) variety cadenza. the transformation cassette carried the ama1 gene under the control of a powerful wheat endosperm-specific promoter (1bx17 hmw-gs). southern-blot analysis of t(1) lines confirmed the integration of the foreign gene, while rt-pcr and western-blot analyses of ... | 2009 | 19466426 |