Wheat powdery mildew is one of the main diseases in wheat production. The main problems of wheat production in our country are single resistance source, unreasonable resistance genes layout, and the effective powdery mildew gene has not yet been fully used, so we desperately need to improve resistance source in wheat breeding, and explore new effective resistance genes. In this study, collection of 260 wheat breeding materials was used, including 35 from other country, 1 from local species, 224 from...