Preliminary Report on Over-summering of Stripe Rust and Wheat Powdery Mildew in Xinjiang

【 Objective 】 Through the investigation and study of the occurrence of wheat stripe rust and wheat powdery mildew on volunteer seedlings in different altitude wheat fields in Xinjiang, the project aims to explore the diseases in over-summering areas.【 Method 】The method of randomized block experiment was used to investigate and analyze the occurrence of stripe rust and powdery mildew in frequently-happening wheat fields at different altitudes.【 Result 】The results showed that wheat stripe rust and wheat powdery mildew could survive summer on the volunteer seedlings at the altitudes of 669-1,875 m in Yili prefecture. Wheat powdery mildew could live over-summer on the volunteer seedlings at the altitudes of 1,308-1,916.2 m in Kashi prefecture. Wheat powdery mildew could over-summer on the volunteer seedlings at the altitudes of 770-1,145 m in Changji prefecture. However, the wheat stripe rust were not found in Kashi and Changji prefecture.【 Conclusion 】Wheat powdery mildew could survive summer in Yili, Kashi and Changji prefecture. The over-summering spores of wheat stripe rust were found in Yili River Valley at different altitudes. However, the over-summering spores of wheat stripe rust were not found in Kashi and Changji prefecture.