Fig. 1

Population structuring of the sorghum diversity panel. (A). A distribution map showing the geographical origin of the 206 sorghum genotypes. (B). A phylogenetic tree of genotypes in the sorghum diversity panel according to their origin. Ancestry was inferred using the Neighbor-joining algorithm implemented in APE. Branch colors on the phylogenetic tree correspond with dots on the map to represent the basic sorghum races. (C). Hierarchical population structuring of the sorghum diversity panel. Stratification was performed using ADMIXTURE based on K values (ranging from 1 to 10). The indicated K values had the lowest CV values