Fig. 2
Population structure of the spinach population in this association panel. 2A. Optimum K was determined with the minimum cross-validation errors in the data for K. 2B. Grouping of genotypes in the association panel into two genetic sub-populations where the horizontal axis represents the spinach genotypes and the vertical axis represents the probability of genotypes belonging to different genetic groups. Spinach genotypes membership proportion to each population group are shown with a unique color, red (Q1) and green (Q2)