Selective Loss of Diversity in Doubled-Haploid Lines from European Maize Landraces.

ABSTRACT: Maize landraces are well adapted to their local environments and present valuable sources of genetic diversity for breeding and conservation. But the maintenance of open-pollinated landraces in ex-situ programs is challenging, as regeneration of seed can often lead to inbreeding depression and the loss of diversity due to genetic drift. Recent reports suggest that the production of doubled-haploid (DH) lines from landraces may serve as a convenient means to preserve genetic diversity in a homozygous form that is immediately useful for modern breeding. The production of doubled-haploid (DH) lines presents an extreme case of inbreeding which results in instantaneous homozygosity genome-wide. Here, we analyzed the effect of DH production on genetic diversity, using genome-wide SNP data

SUBMITTER: Zeitler L 

PROVIDER: S-EPMC7341142 | biostudies-literature | 2020 Jul

REPOSITORIES: biostudies-literature