Genomic Patterns of Introgression in Interspecific Populations Created by Crossing Wheat with Its Wild Relative.

ABSTRACT: Introgression from wild relatives is a valuable source of novel allelic diversity for breeding. We investigated the genomic patterns of introgression from Aegilops tauschii, the diploid ancestor of the wheat D genome, into winter wheat (Triticum aestivum) cultivars. The population of 351 BC₁F₃:₅ lines was selected based on phenology from crosses between six hexaploid wheat lines and 21 wheat-Ae. tauschii octoploids. SNP markers developed for this population and a diverse panel of 116 Ae. tauschii accessions by complexity-reduced genome sequencing were used to detect introgression based on the identity-by-descent analysis. Overall, introgression frequency positively correlated with recombination rate, with a high incidence of intr

SUBMITTER: Nyine M 

PROVIDER: S-EPMC7534432 | biostudies-literature | 2020 Oct

REPOSITORIES: biostudies-literature