High-throughput identification of SNPs reveals extensive heterosis with intra-group hybridization and genetic characteristics in a large rapeseed (Brassica napus L.) panel

Genetically diverse germplasm sets are necessary for the identification of heterotic groups in hybrid breeding programs. Assigning parental lines to identified heterotic groups may increase the efficiency of hybrid rapeseed breeding programs. In this study, the genetic diversity, population structure, relationship, and linkage disequilibrium (LD) of 995 rapeseed accessions, including improved breeding lines and parental lines of elite hybrids,...