RAD-seq reveals genetic structure of the F₂-generation of natural willow hybrids (Salix L.) and a great potential for interspecific introgression.

ABSTRACT:

Background

Hybridization of species with porous genomes can eventually lead to introgression via repeated backcrossing. The potential for introgression between species is reflected by the extent of segregation distortion in later generation hybrids. Here we studied a population of hybrids between Salix purpurea and S. helvetica that has emerged within the last 30 years on a glacier forefield in the European Alps due to secondary contact of the parental species. We used 5758 biallelic SNPs produced by RAD sequencing with the aim to ascertain the predominance of backcrosses (F₁ hybrid x parent) or F₂ hybrids (F₁ hybrid x F₁ hybrid) among hybrid offspring. Further, the SNPs were used to study segregation distortion in the second hybrid gener

SUBMITTER: Gramlich S 

PROVIDER: S-EPMC6276181 | biostudies-literature | 2018 Dec

REPOSITORIES: biostudies-literature