Figure 3. Population Structure in A. thaliana .

Each pie chart represents an accession, and is placed on the map according to origin (some of the population samples were too densely sampled and have been shifted for clarity). Accessions sampled outside Europe have been placed at the correct latitude. The exact origin of the standard lab accession Col-0 is not known. The colors and proportions within each pie chart correspond to the output of Structure in Figure 2. (A) K = 3; (B) K = 8.