Fig. 1

Genetic relationship dendrogram and genetic structure of germplasm collection. Accession names on the dendrogram node-leaves are colored according to morphological characteristics distinct to the three races. Clustering of genetic groups was based on Ward’s method and the distance method of 1-proportion of shared alleles (PSA). Only bootstrap values > 650 are presented with a confidence of the bootstrap-value out of 1000. Genomic admixture was estimated by STRUCTURE program with three subpopulations (K = 3). The average result over 20 simulations was calculated using CLUMPAK, and plotted as a color coded bar plot