Figure 4.

Genetic structure and phylogenetic analysis of PRP accessions. A, Population structure estimated in the whole panel (FB_1262) and PRP accessions (PRP_X), as estimated for K (number of a priori cluster) equal to 4. OC_B, Occidental breeding; OC_T, o_{ccidental traditional;} OR_T, oriental traditional, respectively. B, PCA analysis of the subsets with a core size of 169 entries. Scores for each accession were obtained from the work of Micheletti et al. (2015). The 95% confidence ellipses in the scatterplot were estimated using PAST software. C, NJ phylogenetic tree. Blue squares indicate accessions with traditional and historical value, violet circles indicate the other PRP accessions, and colors reflect the population structure.