Figure 3From: Genetic diversity of natural orchardgrass (Dactylis glomerataL.) populations in three regions in EuropePrincipal component analysis on 1861 genotypes from three European regions using 29 SSR markers. PCA 1 and PCA 2 refer to the first and second principal component, respectively. The corresponding percentages refer to the proportion of variance explained by the axes. Coloration is according to region (dark grey (Bulgaria), grey (Switzerland), light grey (Norway)).Back to article page