Figure 1. A consensus UPGMA dendrogram of 43 wheat accessions constructed using the genetic distance-based method based on 1000 bootstrap replications. The bootstrap values >50% are shown in the tree. The market class each sample represents is indicated in the parentheses. The four model-based populations were depicted as = Winter–East, = Winter–West, = Spring–Northern Plains, and • = Spring–Pacific Northwest groups. *Q36, a facultative SWS line, was treated as SWW in this study.