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Distribution of diploid Pseudoroegneria spicata individuals along principal component 1 and principal component 2 axes of genetic variation. Variation explained by the axes is given in parentheses. Individuals in PC space are colored by their sampling locations, which are displayed in the inset (see also Figure 1). Individuals colored black represent the commercial germplasm sources. Colors in this figure do not correlate to colors that describe populations (i.e., Figures 4 and 5)
