Hidden Effects of Seed Quality Breeding on Germination in Oilseed Rape (Brassica napus L.).

ABSTRACT: Intense selection for specific seed qualities in winter oilseed rape breeding has had an inadvertent negative influence on seed germination performance. In a panel of 215 diverse winter oilseed rape varieties spanning over 50 years of breeding progress in winter-type rapeseed, we found that low seed erucic acid content and reduced seed glucosinolate content were significantly related with prolonged germination time. Genome-wide association mapping revealed that this relationship is caused by linkage drag between important loci for seed quality and germination traits. One QTL for mean germination time on chromosome A09 co-localized with significant but minor QTL for both seed erucic acid and seed glucosinolate content. This suggested either potential pleiotropy or close linkage of minor fac

SUBMITTER: Hatzig S 

PROVIDER: S-EPMC5891602 | biostudies-literature | 2018

REPOSITORIES: biostudies-literature