云南水稻品种对水稻白叶枯病的抗性遗传研究  

Study on the Genetic Resistance of Rice Varieties to Bacterial Blight in Yunnan

作　　者：吴亚鹏[1] 夏贤仁[1] 杨云亮[1] 白学慧[1] 姬广海[1] 

机构地区：[1]云南农业大学,教育部农业生物多样性与病虫害控制重点实验室,云南昆明650201

出　　处：《云南农业大学学报》2008年第1期1-5,共5页Journal of Yunnan Agricultural University

基　　金：国家自然科学基金资助项目(30160052)

摘　　要：对水稻白叶枯抗性较好的品种(IR66897B,Bg90-2,PSBRC28,滇屯502)和感病品种(大粒粳24号,粳香2号,南29,IRBB17)进行孕穗期接种;与已知抗性基因的鉴别品种比较,可以看出滇屯502可能携带xa5,xa13,Xa21抗病基因。并对5个杂交组合的4个抗病亲本进行抗性遗传分析,结果表明抗病品种滇屯502对Y5菌株的抗性是由一对显性基因控制的,抗病品种IR66897B对18号和Y3号菌株的抗性分别由一对隐性基因和两对隐性基因控制的,抗病品种Bg90-2对Y11菌株的抗性是由两对显性基因控制的,抗病品种PSBRC28对Y11菌株的抗性是由一对显性基因控制的。The resistant rice cuhivars （IR66897B, Bg90 -2, PSBRC28 and Diantun502） and the susceptible rice cuhivars （Dalijing24, Jingxiang2, Nan29 and IRBB17） were inoculated at the booting stage. The rice cultivars Diantun502 might carry xa5, xa13 and Xa21 resistance gene, compared with the resistance characteriztics of different varieties. Genetic studies on the resistance to bacterial blight in 4 parental rice cuhivars, the results revealed that the resistance of IR66897B to strain No. 18 and Y3 isolate of Xoo were respectively controlled by a single recessive gene and two recessive genes. The resistance of Bg90 -2 to Y11 was controlled by two dominant genes, Diantun502 to Y5 and PSBRC28 to Yll by one dominant gene, respectively.

关 键 词：水稻品种 白叶枯病 抗性基因 

分 类 号：S435.111.47[农业科学—农业昆虫与害虫防治]