A genome-wide association study of 23 agronomic traits in Chinese wheat landraces.

摘要: Uncovering the genetic basis of agronomic traits in wheat landraces is important for ensuring global food security via development improved varieties. Here, 723 from 10 Chinese agro-ecological zones were evaluated 23 six environments. All accessions could be clustered into five subgroups based on phenotypic data discriminant function analysis, which was highly consistent with genotypic classification. A genome-wide association study conducted these using 52 303 DArT-seq markers to identify marker-trait associations and candidate genes. Using both general linear model mixed model, 149 significant identified 21 best unbiased prediction values. Considering linkage disequilibrium decay distance this study, within 10 cM combined as a quantitative trait locus (QTL), total 29 QTL 15 traits. Of these, heading date, flag leaf width, peduncle length, thousand kernel weight had been reported previously. Twenty-five genes associated identified. These included known vernalization VRN-B1 vrn-B3 photoperiod response Ppd PRR. Overall, should helpful elucidating underlying mechanisms complex performing marker-assisted selection wheat.