Genetic diversity and selective sweeps in historical and modern Canadian spring wheat cultivars using the 90K SNP array.

ABSTRACT: Previous molecular characterization studies conducted in Canadian wheat cultivars shed some light on the impact of plant breeding on genetic diversity, but the number of varieties and markers used was small. Here, we used 28,798 markers of the wheat 90K single nucleotide polymorphisms to (a) assess the extent of genetic diversity, relationship, population structure, and divergence among 174 historical and modern Canadian spring wheat varieties registered from 1905 to 2018 and 22 unregistered lines (hereinafter referred to as cultivars), and (b) identify genomic regions that had undergone selection. About 91% of the pairs of cultivars differed by 20-40% of the scored alleles, but only 7% of the pairs had kinship coefficients of < 0.250, suggesting the presence of a high proportion of redund

SUBMITTER: Semagn K 

PROVIDER: S-EPMC8664822 | biostudies-literature | 2021 Dec

REPOSITORIES: biostudies-literature