Fig. 2

Population structure analysis in 262 rice accessions. a Changes in the △k value. b) Posterior probability of 262 accessions belonging to five subpopulations calculated by STRUCRURE software. The colored subsections within each vertical bar indicate membership coefficient (Q) of the accession to different clusters. Identified subpopulations are SP1 (red color), SP2 (green color), SP3 (navy blue color), SP4 (yellow color), SP5 (purple color). c Neighbor-joining tree for the 262 accessions based on Nei’s genetic distance. d Principal components analysis (PCA) for 462 accessions and referance accessions genotyped with 262 SSR markers