Fig. 2From: Genetic diversity and structure of Iberian Peninsula cowpeas compared to world-wide cowpea accessions using high density SNP markersPrincipal component analysis of cowpea accessions used in this study. The accessions are colored by subpopulation membership (K = 4). Upper plots display all accessions, while the lower plots highlight only cowpea accessions from Iberia PeninsulaBack to article page