QTL architecture of reproductive fitness characters in Brassica rapa.

ABSTRACT:

Background

Reproductive output is critical to both agronomists seeking to increase seed yield and to evolutionary biologists interested in understanding natural selection. We examine the genetic architecture of diverse reproductive fitness traits in recombinant inbred lines (RILs) developed from a crop (seed oil) × wild-like (rapid cycling) genotype of Brassica rapa in field and greenhouse environments.

Results

Several fitness traits showed strong correlations and QTL-colocalization across environments (days to bolting, fruit length and seed color). Total fruit number was uncorrelated across environments and most QTL affecting this trait were correspondingly environment-specific. Most fitness components were positively correlated, consistent with life-history theory that gen

SUBMITTER: Dechaine JM 

PROVIDER: S-EPMC4004417 | biostudies-literature | 2014 Mar

REPOSITORIES: biostudies-literature