Crop to wild introgression in lettuce: following the fate of crop genome segments in backcross populations.

ABSTRACT:

Background

After crop-wild hybridization, some of the crop genomic segments may become established in wild populations through selfing of the hybrids or through backcrosses to the wild parent. This constitutes a possible route through which crop (trans)genes could become established in natural populations. The likelihood of introgression of transgenes will not only be determined by fitness effects from the transgene itself but also by the crop genes linked to it. Although lettuce is generally regarded as self-pollinating, outbreeding does occur at a low frequency. Backcrossing to wild lettuce is a likely pathway to introgression along with selfing, due to the high frequency of wild individuals relative to the rarely occurring crop-wild hybrids. To test the effect of backcrossing on

SUBMITTER: Uwimana B 

PROVIDER: S-EPMC3384248 | biostudies-literature | 2012 Mar

REPOSITORIES: biostudies-literature