GrainGenes Reference Report: CRS-50-1180
Reference
CRS-50-1180
Title
Identification of Chromosome Locations of Genes Affecting Preharvest Sprouting and Seed Dormancy Using Chromosome Substitution Lines in Tetraploid Wheat (Triticum turgidum L.)
Journal
Crop Science
Year
2010
Volume
50
Pages
1180-117
Author
Chao SM Xu SS Elias EM Faris JD Sorrells ME
Abstract
Seed dormancy, the main factor contributing to preharvest sprouting (PHS) resistance, is a complex trait and is strongly influenced by environmental growth conditions. In this study, three sets of single chromosome substitution lines, including 36 genotypes, in a durum wheat [Triticum turgidum L. ssp durum (Desf.) Husn] background with donor chromosomes originating from three wild emmer [T. turgidum L. ssp. dicoccoides (Korn. ex Asch. and Graebn.) Thell.] accessions were grown in nine field environments and evaluated for seed dormancy and PHS resistance. The substitution lines involving chromosome 3A were among the most dormant genotypes. Germination tests indicated that five chromosomes contained genes influencing seed dormancy at a level comparable to 3A. Results from PHS tests showed that PHS affected by at least eight T. dicoccoides chromosomes including 3A. The chromosomes harboring genes for seed dormancy did not fully correspond with those for PHS resistance. The weak correlations between PHS and dormancy observed in this study indicate that difference genes are affecting these traits and they may be differentially influenced by the environment. Nonetheless, our results revealed that genes present on five chromosomes, 2A, 2B, 3A, 4A, and 7B, were found to affect both PHS resistance and seed dormancy. These genotypes thus provide useful resources for further studies on genetic interactions that contribute to the overall phenotypic variation and on genetic dissection of quantitative trait loci underlying PHS resistance.
External Databases
https://dl.sciencesocieties.org/publications/cs/pdfs/50/4/1180
Germplasm
LDN(521-1A)
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GrainGenes is a product of the Agricultural Research Service of the US Department of Agriculture.
GrainGenes Reference Report: CRS-50-1180
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GrainGenes is a product of the Agricultural Research Service of the US Department of Agriculture. | |||