Fig. 3

Pair-wise φpt among 17 subpopulations of Puccinia striiformis f. sp. tritici in this study. The larger the circle the larger the φpt value was, and the black, dark gray and light gray colors of circle represent the φpt level range of 0–0.25, 0.25–0.5, and 0.5–0.75, respectively. A “X” indicated the differentiation between the paired subpopulations was insignificant at P = 0.05