GWAS, QTL mapping and gene expression analyses in Brassica napus reveal genetic control of branching morphogenesis.

ABSTRACT: Branch number is an important trait in plant architecture that can influence crop yield and quality in Brassica napus. Here, we detected the QTLs responsible for branch number in a DH population and its reconstructed F2 population over two years. Further, a GWAS research on branch number was performed using a panel of 327 accessions with 33186 genomic SNPs from the 60 K Brassica Illumina® Infinium SNP array. Through combining linkage analysis and association mapping, a new QTL was fine mapped onto C03. Subsequently, we tested the correlations between the SNP polymorphisms and mRNA expression levels of genes in the target interval to identify potential loci or genes that control branch number through expression. The results show that 4 SNP loci are associated with the corresponding gene exp

SUBMITTER: He Y 

PROVIDER: S-EPMC5698412 | biostudies-literature | 2017 Nov

REPOSITORIES: biostudies-literature