Genome-wide association analysis of barley grain related traits
Grain size and thousand grain weight is the main factors that determine the barley yield and uses.It is of great importance to mine candidate genes related to grain for improving the yield and quality of barley.In this study,genome-wide association study(GWAS)was carried out to detect the candidate genes associated with grain traits in natural population containing 242 barley germplasm resources.The results showed that these traits showed rich phe-notypic variation,with the coefficient of variation ranged from 6.65％-19.98％.Thousand grain weight was signifi-cantly correlated with grain length and grain width.The correlation coefficient between thousand grain weight and grain width was appreciably higher than thousand grain weight and grain length.Fifty-two SNP locus were detected by GWAS on 7 chromosomes.BLAST analysis showed that six candidate genes related to grain traits were selected.The ethylene response factor on chromosome 7 was simultaneously correlated with grain width and thousand grain weight,indicating that there was a multi-effect function of this gene.The results of this study provide new genetic resources and theoretical basis for the genetic improvement of barley yield and quality.
barleygrain traitgenome-wide association analysiscandidate gene
NETL
NSTL
万方数据
