Fig. 4
Results from discriminant analysis of principle component (DAPC) and STRUCTURE analysis. a Scatter-plot of 461 isolates of Puccinia striiformis f. sp. tritici according to DAPC. The symbols of “△”, “●”, and “▲” represented isolates belonging to genetic groups 1, 2, and 3, respectively. b, c and d The frequency and geographical distribution of isolates assigned to genetic groups G1, G2, G3 and admixture (A) in subpopulations collected in spring 2013, autumn 2013, and spring 2014, respectively, according to DAPC. e Bayesian assignment of individual isolates into three genetic groups (black for G1, grey for G2, and white for G3) in STRUCTURE analysis. f, g and h The frequency and geographical distribution of isolates assigned to groups G1, G2, G3 and A in subpopulations collected in the spring of 2013, autumn of 2013 and spring of 2014, respectively, according to STRUCTURE analysis. A individual was assigned to a group if it had a probability no less than 80, and 60% belonging to the group in DAPC, and STRUCTURE analysis, respectively, otherwise it would be assigned to group A. Population code (P1-P17) was abbreviated from GS-P1-S13, GS-P2-S13, GS-P3-S13, GS-P4-S13, SC-P5-S13, SC-P6-S13, GS-P7-A13, SC-P8-A13, SX-P9-A13, GS-P10-S14, SC-P11-S14, SC-P12-S14, SC-P13-S14, SC-P14-S14, SX-P15-S14, SX-P16-S14, and SX-P17-S14, respectively