Fig. 3From: Molecular evidences for population differentiation and the migration from south to north of Puccinia triticina in eastern ChinaPairwise population Nm values indicate frequent migrations of Pt strains between geographically close populations. The shade of the color and size of the circle represents the Nm values. Populations in long distances have low Nm values in the bottom left box (H1–H5 with H9–H11)Back to article page