Genetic diversity and population structure of Uganda's yam (Dioscorea spp.) genetic resource based on DArTseq.

ABSTRACT: Assessing the genetic diversity of yam germplasm from different geographical origins for cultivation and breeding purposes is an essential step for crop genetic resource conservation and genetic improvement, especially where the crop faces minimal attention. This study aimed to classify the population structure, and assess the extent of genetic diversity in 207 Dioscorea rotundata genotypes sourced from three different geographical origins. A total of 4,957 (16.2%) single nucleotide polymorphism markers were used to assess genetic diversity. The SNP markers were informative, with polymorphic information content ranging from 0.238 to 0.288 and a mean of 0.260 across all the genotypes. The observed and expected heterozygosity was 0.12 and 0.23, respectively while the minor allele frequency r

SUBMITTER: Amponsah Adjei E 

PROVIDER: S-EPMC9928066 | biostudies-literature | 2023

REPOSITORIES: biostudies-literature