Breeding signature of combining ability improvement revealed by a genomic variation map from recurrent selection population in Brassica napus.

ABSTRACT: Combining ability is crucial for parent selection in crop hybrid breeding. The present investigation and results had revealed the underlying genetic factors which might contribute in adequate combining ability, further assisting in enhancing heterosis and stability. Here, we conducted a large-scale analysis of genomic variation in order to define genomic regions affecting the combining ability in recurrent selection population of rapeseed. A population of 175 individuals was genotyped with the Brassica60K SNP chip. 525 hybrids were assembled with three different testers and used to evaluate the general combining ability (GCA) in three environments. By detecting the changes of the genomic variation, we identified 376 potential genome regions, spanning 3.03% of rapeseed genome which provided

SUBMITTER: Zhao X 

PROVIDER: S-EPMC4944167 | biostudies-literature | 2016 Jul

REPOSITORIES: biostudies-literature