Fig 1.
Map of Ethiopia showing the collection sites for the different cowpea landraces from different eco-geographical regions.
The map was constructed using the DIVA-GIS software as described by Hijmans et al., (2012) [49].
Table 1.
Genetic parameter estimates based on 6498 SNPs among cowpea subpopulations.
Fig 2.
UPGMA dendrogram showing the genetic relationships among cowpea collections grouped into three distinct clusters (cluster 1 = red, cluster 2 = green and cluster 3 = blue).
Fig 3.
Neighbor joining tree among five different regions of Ethiopia and introduced improved cultivars based on pairwise FST.
Table 2.
Analysis of molecular variance among and within cowpea subpopulations.
Fig 4.
Population structure of 357 cowpea genotypes, in K = 3; each color represents one cluster.
Table 3.
Proportion of membership of each predefined population in each of the clusters obtained at the best K (K = 3).
Fig 5.
Scattered plot of DAPC, each color represents one cluster.
Fig 6.
A bi-plot of the first two principal components (PC1 and PC2) of 357 cowpea genotypes, using 6 498 SNP markers.
Each color corresponds to population structuring and grouping.
Table 4.
Number and proportion of accessions in the core collection along with each collection regions.