| 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 |
| development, utilization of introgression lines using a synthetic wheat as donor. | a series of introgression lines (ils) were generated from repeated backcrossing between the exotic hexaploid wheat genotype am3 and the common wheat genotype laizhou953. am3 was synthesized by crossing triticum carthlicum with aegilops tauschii and was used as the donor parent in this study, and laizhou953 was used as the recurrent parent. two hundred and five ssr markers showing polymorphism between the two parents were used to identify the introgressed am3 chromosome segments in 97 bc4f3 ils. ... | 2006 | 16550399 |
| implications of an inverted duplication in the wheat kn1-type homeobox gene wknox1 for theorigin of persian wheat. | introgression between related species with different ploidy levels has played important roles in wheat subspecies differentiation. persian wheat, a cultivated tetraploid wheat subspecies (triticum turgidum subsp. carthlicum), is postulated to have evolved through interploidy hybridization between tetraploid and hexaploid wheats. here, we report evidence for the origin of subsp. carthlicum based on the discovery of a new allele for the 5th-to-6th exon region of the wknox1bknotted1-type homeobox g ... | 2015 | 26399771 |
| generation of wheat transcription factor fox rice lines and systematic screening for salt and osmotic stress tolerance. | transcription factors (tfs) play important roles in plant growth, development, and responses to environmental stress. in this study, we collected 1,455 full-length (fl) cdnas of tfs, representing 45 families, from wheat and its relatives triticum urartu, aegilops speltoides, aegilops tauschii, triticum carthlicum, and triticum aestivum. more than 15,000 t0 tf fox (full-length cdna over-expressing) rice lines were generated; of these, 10,496 lines set seeds. about 14.88% of the t0 plants showed o ... | 2015 | 26176782 |
| microsatellite markers linked to 2 powdery mildew resistance genes introgressed from triticum carthlicum accession ps5 into common wheat. | two dominant powdery mildew resistance genes introduced from triticum carthlicum accession ps5 to common wheat were identified and tagged using microsatellite markers. the gene designated pmps5a was placed on wheat chromosome 2al and linked to the microsatellite marker xgwm356 at a genetic distance of 10.2 cm. based on the information of its origin, chromosome location, and reactions to 5 powdery mildew isolates, this gene could be a member of the complex pm4 locus. the 2nd gene designated pmps5 ... | 2005 | 16094424 |
| chromosome composition, stability and fertility of alloploids between triticum turgidum var. carthlicum and thinopyrum junceiforme. | alloploids, most of them hexaploid, from crosses between tetraploid wheat, triticum carthlicum, and the perennial tetraploid thinopyrum junceiforme were analysed for chromosome composition, stability and fertility using genomic in situ hybridization and meiotic analysis. the alloploids differed in their total number of chromosomes, 38-47 + telocentrics in "hexaploids" and 54 and 56 in "octoploids", and also in their number of thinopyrum chromosomes (8-15). translocations, mostly robertsonian one ... | 2002 | 12184490 |
| genome composition, stability and fertility of hexaploid alloploids between triticum turgidum var. carthlicum and leymus racemosus. | hexaploid alloploids between the tetraploid wheat triticum carthlicum and the perennial tetraploid leymus racemosus were analysed for chromosome composition and cytogenetic stability. gish analysis showed different lines to have from 11 to 16 leymus chromosomes. the alloploids showed a relatively high frequency of univalents in meiotic metaphase and of aneuploid plants and hence they are not stable. the seedset is lower than in wheat, but high enough to secure a safe propagation and preservation ... | 2001 | 11525068 |
| control of galactosyl diglycerides in wheat endosperm by group 5 chromosomes. | lower levels of monogalactosyl diglyceride (mgdg) and digalactosyl diglyceride (dgdg) have been found in tetraploid wheats as compared with those in hexaploid wheats. the same difference has been found between hexaploid cultivars and tetraploid lines derived from them by d genome extraction. a lower level of mgdg and dgdg is also present in triticum carthlicum (aabb) as compared with aegilops squarrosa (dd) or with the synthetic t. spelta (aabbdd) obtained from them. analysis of the appropriate ... | 1977 | 17248744 |