Fig. 1

The genetic clusters inferred using STRUCTURE. a Graphical method allowing the detection of the number of groups K using ∆K and LnP(K). ∆K and LnP(K) are shown in blue and red, respectively. b Inferred population structure of the collection using STRUCTURE software. Bar plot of individual ancestry proportions for the genetic clusters inferred using STRUCTURE (K = 2). Individual ancestry proportions (q values) are sorted within each cluster. Admixture model, independent frequencies, 30,000 burn-in iterations, and 100,000 Markov Chain Monte Carlo iterations were used for this analysis. Cultivation type and wild type ancestral populations are shown in red and blue, respectively