highly significantP = 5.41 × 10 -34
After using k-means clustering to assign individuals to two different groups according to their coordinates in the PCoA, a highly significant association ( P = 5.41 × 10 -34 ) between the k-means assignments (n cluster1 = 531, n cluster2 = 118) and breeding program subgroups (n subgroup1 = 352, n subgroup2 = 297) was found.