Pi-z、Pi-ta^2等基因在云南粳稻稻瘟病抗性育种中的应用  

Applications of Pi-z、Pi-ta^2 Genes in Japonica Rice Breeding with Blast Resistance in Yunnan

作　　者：张学堂[1] 廖新华[1] 朱振华[1] 苏振喜[1] 世荣[1] 赵国珍[1] 蒋聪[1] 戴陆园[1] 

机构地区：[1]云南省农业科学院粳稻育种中心,昆明650205

出　　处：《中国农业科技导报》2010年第1期100-105,共6页Journal of Agricultural Science and Technology

基　　金：云南省"十一五"科技攻关项目(2006NG04)资助

摘　　要：采用与育种同步的抗性鉴定方法,利用日本鉴别菌系作为鉴别标准品种,分析了Pi-z、Pi-ta2等基因2002-2007年在云南水稻稻瘟病抗性育种实践中的表现。结果表明,截至2007年,Pi-z、Pi-ta2、Pi-zt在云南稻区仍然有利用价值;Pi-ta2叶/穗瘟抗性反应表现明显不一致;Pi-z、Pi-zt在各种育种材料中叶/穗瘟抗性表现一致;在不同抗性组合中,发现Pi-z对育种材料的抗性改良效果更明显。Japan strains was used as standard varieties and resistance identification method was synchronized with breeding,the performance of Pi-z,Pi-ta2 genes was analyzed in blast resistant rice breeding in Yunnan from 2002 to 2007.The result showed that till 2007 Pi-ta2,Pi-z and Pi-zt genes were still of utilization value in rice producing reigns of Yunan,and resistance of Pi-ta2 had distinct inconformity between leaf resistance and spike resistance to blast,while the other two had the same performance.Pi-z had more obvious effect in improving resistance of breeding materials in different resistant breeding combinations.

关 键 词：粳稻 稻瘟病 Pi-z Pi-ta2 抗性育种 

分 类 号：S511.034[农业科学—作物学]