Fig. 2

Analysis of the population structure and relative kinships of the 520 rapeseed accessions. a Estimated LnP(D) of possible clusters (K) from 1 to 10. b ΔK based on rate of change of LnP (D) between successive K values. c Model-based Bayesian clustering performed using STRUCTURE 2.1 for K = 2 subpopulations. Each individual is indicated by a vertical bar, partitioned into colored segments with the length of each segment representing the proportion of the individual’s genome. Green indicates subpopulation P1 genotypes and red represents subpopulation P2 genotypes. d The sub-populations in a population of 520 B. napus accessions, suggested by principal coordinate analysis (PCA). e Distribution of relative kinship coefficients across the 520 accessions. Only kinship coefficients ranging from 0 to 0.5 are shown