Fig. 3

Phylogenetic tree based on Nei’s genetic distance of Puccnia striiformis f. sp. tritici populations within the Northwest epidemic region during the cropping season 2021. North: Northwest Xinjiang, Midwest: Midwest Xinjiang, East: East Xinjiang, SX: Shaanxi, QH: Qinghai, NX: Ningxia, and GS: Gansu