Figure 4From: Genetic structure in cultivated grapevines is linked to geography and human selectionPrincipal component analysis on SSR data. Principal component analysis on SSR data of genotypes belonging to Ks = 5. Colors of the groups correspond to the colors in Figure 2. Axes 1 and 2 explain 30.3% and 21.4% of the total variance respectively (black vertical bars in the eigenvalues histogram).Back to article page