水稻资源对稻瘟病质量抗性及数量抗性评价  

Evaluation on qualitative and quantitative resistance of rice germplasm to Magnaporthe oryzae

作　　者：冯爱卿[1] 杨健源[1] 陈深[1,2] 曾列先[1] 杨祁云[1] 苏菁[1,2] 汪文娟[1,2] 朱小源[1] 

机构地区：[1]广东省农科院植物保护研究所,广东广州510640 [2]广东省植物保护新技术重点实验室,广东广州510640

出　　处：《广东农业科学》2015年第12期27-32,共6页Guangdong Agricultural Sciences

基　　金：广东省科技攻关项目(2007A020100004);国家公益性行业(农业)科研专项(201203014);国家现代农业产业技术体系建设专项(CARS-01-24);广东省现代农业产业技术体系建设专项(粤财教[2009]356号)

摘　　要：采用病区病圃鉴定以及室内抗谱测定方法,对来自45个国家和地区的1 659份水稻资源进行稻瘟病质量抗性和数量抗性评价.结果表明,表现高抗的材料（0～1级）有292份,占17.6％;抗（2级）的材料有68份,占4.1％;中抗（3级）、中感（4～5级）、感（6～9级）的材料分别有208、471、620份,分别占12.5％、28.4％、37.4％.筛选出BG1222、BL122、BTX、IR37704-131-2-1-3-2、LEBONNET等27份广谱抗瘟性资源,具有较高的质量抗性水平,其抗性频率均达90％以上.对部分重点资源进行数量抗性评价,筛选出BR27、DRAGO、IR100、QINLIUAI、SERIBU GANTANG、YUEXIANGZHAN等14份数量抗性较好的材料,其中有8份资源对入侵病菌的抵抗能力优于IR36.本研究为华南地区抗病育种提供了重要的资源材料以及基本数据,对抗瘟新基因的挖掘以及丰富本地区的抗病资源有着重要意义.Based on the approaches of blast nursery in upland condition and the test of spectrum to rice blast isolates, evaluation on the blast resistance of 1 659 rice germplasm in IRBN （international rice blast nursery） collected form 45 countries and regions was conducted. Among the tested entries, 292 entries which accounted for 17.6% showed high blast resistance （0 and 1 disease scale）, 68 entries （accounted for 4.1%） showed resistance to blast （3 disease scale）, the number of entries with intermediate resistance, intermediate susceptibility and suseeptiblity were 208（with the corresponding percentage of 12.5%）, 471 （28.4%）, 620 （37.4%）, respectively. Among the tested entries, 27 entries including BG1222, BL122, BTX, IR37704-131-2-1-3-2, LEBONNET and so on had good quality resistance, these resources showed broad spectrum resistance with the resistant frequency of higher than 90%, 14 entries including BR27, DRAGO, IR100, QINLIUAI, SERIBU GANTANG, YUEXIANGZHAN and so on, showed good quantitative resistance, and 8 entries had higher quantitative resistance than IR36. The results could provide important blast resistant resources for the local rice breeding program and had a significant value for the discovery of new blast resistance genes and its application in the blast resistance breeding.

关 键 词：水稻资源 稻瘟病 抗病性 

分 类 号：S511.032[农业科学—作物学]