Fig. 3

Principle coordinate analysis (PCoA) of Puccinia striiformis f. sp. tritici populations analyzed using GenAlEx 6.5. Each color represents a population. a Populations based on group of counties from Ningjin (HBA1), Daming (HBB1), Dancheng (HNA1), Xihua (HNA2), Lankao (HNB1), Fushan (SDA1), Yuncheng (SDB1), Mei (SXA1), Qishan (SXA2), Fengxiang (SXA3), Fufeng (SXA4), Long (SXA5), Qianyang (SXA6), Feng (SXA7), Xiyi (SXB1), Zhouzhi (SXB2), and Chenggu (SXC1). b Populations based on group of prefecture from Xingtai (HBA), Handan (HBB), Zhoukou (HNA), Kaifeng (HNB), Yantai (SDA), Heze (SDB), Baoji (SXA), Xi'an (SXB), and Hanzhong (SXC). c Populations based on group of provinces from Hebei (HB), Henan (HN), Shandong (SD), and Shaanxi (SX)