Footprints of Selection Derived From Temporal Heterozygosity Patterns in a Barley Nested Association Mapping Population.

ABSTRACT: Nowadays, genetic diversity more than ever represents a key driver of adaptation to climate challenges like drought, heat, and salinity. Therefore, there is a need to replenish the limited elite gene pools with favorable exotic alleles from the wild progenitors of our crops. Nested association mapping (NAM) populations represent one step toward exotic allele evaluation and enrichment of the elite gene pool. We investigated an adaptive selection strategy in the wild barley NAM population HEB-25 based on temporal genomic data by studying the fate of 214,979 SNP loci initially heterozygous in individual BC₁S₃ lines after five cycles of selfing and field propagation. We identified several loci exposed to adaptive selection in HEB-25. In total, 48.7% (104,725 SNPs) of init

SUBMITTER: Maurer A 

PROVIDER: S-EPMC8551860 | biostudies-literature | 2021

REPOSITORIES: biostudies-literature