FIGURE 2 Pairwise FST among populations ofCymbidium faberi in the Qinling Mountains based on cpDNA
A mantel test of FST against geographical distance (in kilometers) was presented in Figure 3. A moderate but significant positive correlation between two variables was detected among populations of C. faberi (mantel r = 0.505, P = 0.011), which indicated that genetic distance was correlated with the geographical distance between populations but not strong.