对水稻细菌性条斑病表现高抗的Ｄｕｌａｒ、ＩＲ２６、ＩＲ３６和ＩＲ１５４５－３３９等４个籼稻品种与感病品种金刚３０杂交并分别与双亲回交，获得Ｆ１、Ｆ２、ＢＣ１和ＢＣ２。在隔离网室用细菌性条斑病菌株ＲＳ－６８接种不同世代群体，根据其抗感反应推断：ＩＲ３６的抗病性是由一对隐性主效基因控制的，Ｄｕｌａｒ、ＩＲ２６和ＩＲ１５４５－３３９三个品种的抗病性分别由一对显性基因控制，Ｄｕｌａｒ和ＩＲ１５４５－３３９的抗病基因呈非等位关系。 Four indica rice varieties, Dular, IR26, IR36 and IR1545-339, which showed high resistance to bacterial leaf streak were crossed with the susceptible variety Vajra 30 and backcrossed with their parents respectively to obtain F1, F2, BC1 and BC2. Inoculated with different generations of strains of Bacterial leaf spot strain RS-68 in isolation cytoplasm, according to their anti-inflammatory response, the resistance of IR36 was controlled by a pair of recessive major genes, Dular, IR26 and IR1545-339 Disease resistance of the three cultivars was controlled by a pair of dominant genes respectively, and the resistance genes of Dular and IR1545-339 were non-allelic.