小麦秆锈病是严重影响小麦产量的病害之一。小麦秆锈菌新小种Ug99及其变异菌株的出现~([1]),随后在肯尼亚和埃塞俄比亚引起的流行,引起了全球对小麦抗秆锈性的再次关注~([2,3])。云南省地处中国西南边境,历史上是中国小麦秆锈菌主要越冬区,为小麦秆锈病的流行提供初菌源。近几年我们对小麦秆锈病的调查研究发现,即使在全国各地几乎见不到该病的情况下,云南省每年均有小麦秆锈 Wheat stem rust is one of the diseases which seriously affect the yield of wheat. The emergence of a new races of wheat stem rust Ug99 and its variant strains ~ ([1]), followed by a pandemic in Kenya and Ethiopia, has raised global concern about the resistance of wheat to stem rust [2,3] . Located in the southwestern border of China, Yunnan Province is historically the main overwintering region of wheat stalk rust, providing the primary bacterial source for the prevalence of wheat stem rust. In recent years, our research on the wheat straw rust found that even in the country almost see the disease case, Yunnan Province every year, wheat stalk rust