Figure 6.- Patterns of genetic differentiation for the 22 natural populations of Primula vulgaris . A) Results from InStruct analysis of microsatellites assigning all populations to two genetic clusters (k=2): Optimal number of clusters was selected according to Evanno et al. (2009); B) Plot of the two first PCs from Discriminant Analysis of Principal Components (DAPC) separating population T08 (blue circles) from the rest of the populations