Fig. 1

Distribution of shared multi-locus genotypes (MLGs) of Puccinia striiformis f. sp. tritici populations under three levels of group divisions. 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)