Fig. 3

Models-based population structure in a core set of 137 Canadian soybean lines. a: Classification into seven populations using fastSTRUCTURE where each individual (from 1 to 137) is represented by a single vertical line and each color represents one cluster. b: Bootstrap consensus phylogenetic tree (2000 replicates) constructed using MEGA 7; each color represents a subgroup and seven subgroups were found in total and c: PCA eigenvalues computed using GAPIT. The total variance explained by each principal component (PC) decreased from PC1 to PC7 and, beyond PC7, the variance explained by each further PC remained low and stable