Locus-dependent selection in crop-wild hybrids of lettuce under field conditions and its implication for GM crop development.

ABSTRACT: Gene escape from crops has gained much attention in the last two decades, as transgenes introgressing into wild populations could affect the latter's ecological characteristics. However, different genes have different likelihoods of introgression. The mixture of selective forces provided by natural conditions creates an adaptive mosaic of alleles from both parental species. We investigated segregation patterns after hybridization between lettuce (Lactuca sativa) and its wild relative, L. serriola. Three generations of hybrids (S1, BC1, and BC1S1) were grown in habitats mimicking the wild parent's habitat. As control, we harvested S1 seedlings grown under controlled conditions, providing very limited possibility for selection. We used 89 AFLP loci, as well as more recently developed dominan

SUBMITTER: Hooftman DA 

PROVIDER: S-EPMC3352534 | biostudies-literature | 2011 Sep

REPOSITORIES: biostudies-literature