[目的]明确可在广西利用的白叶枯病抗病基因和抗病亲本。[方法]利用白叶枯病菌(Xanthomonas oryzae pv.Oryzae)广西优势菌型IV菌接种一套水稻抗白叶枯病单基因系、广西主要的杂交稻亲本和一些重要的种质材料,并调查了其抗感情况。[结果]对IV型菌具抗性的品种有IRBB5、IRBB7和CBB23,且分别含有抗病基因xa5、Xa7和Xa23,确认为白叶枯病菌IV型菌的有效抗病基因。[结论]为抗白叶枯病育种提供了依据。 [Objective] The research aimed to confirm the bacterial blight resistance genes and resistant parents that can be used in Guangxi. [Method] Xanthomonas oryzae pv. Oryzae was used to inoculate a set of rice bacterial blight resistance single-line, Guangxi main hybrid rice parents and some important germplasm materials, and investigated The anti-flu situation. [Result] The varieties resistant to type IV were IRBB5, IRBB7 and CBB23, and the resistance genes xa5, Xa7 and Xa23 were respectively identified as the effective resistance genes of the type IV of bacterial blight. [Conclusion] This provided the basis for the breeding of bacterial blight resistance.