优质杂交稻恢复系稻瘟病抗性初步评价  

The Preliminary Screening of Rice Blast Resistance on the Restorer Lines of High Quality Hybrid Rice

作　　者：卢礼斌[1] 叶宁[1] 郑向华[1] 何琴[1] 杨德卫[1] 刘成德[1] 蒋家焕[1] 叶新福[1] 

机构地区：[1]福建省农业科学院水稻研究所,福州350018

出　　处：《中国农学通报》2011年第3期60-64,共5页Chinese Agricultural Science Bulletin

基　　金：农业部重大专项(2009ZX08001-32B);福建省农业科技重大专项(2008NZ2001-4);福建省农业科学院创新团队项目(STIF-Y04);福建省科技项目(2009R10026-5)

摘　　要：稻瘟病是危害水稻最严重的"三大病害"之一,属世界性病害,抗稻瘟病恢复系资源的挖掘利用研究,对选育高产、优质、抗稻瘟病的杂交稻组合具有重要的意义。在福建省上杭茶地稻瘟病自然鉴定点对162份有代表性的材料进行田间苗瘟、叶瘟和穗颈瘟发病率调查,茶地抗性鉴定综合表现为中抗以上的62份恢复系材料进行室内不同菌株的苗期鉴定,得到27份高抗至中抗稻瘟病水稻恢复系高代材料。调查结果表明,苗瘟、叶瘟和穗颈瘟的发病率分别为3.01%、12.42%和26.21%,苗瘟与叶瘟、苗瘟与穗颈瘟、叶瘟与穗颈瘟的发病率相关系数分别为0.69、0.67和0.78,都达到极显著水平。穗颈瘟的发病率明显大于苗瘟和叶瘟且穗颈瘟在不同时期的发病较高。苗瘟4～5级,后期穗瘟鉴定很可能达到感病或高感;在调查研究中穗颈瘟鉴定达到感病或高感,苗瘟或叶瘟鉴定一般为感病或高感。The rice blast is the worldwide basis plant disease which is harms the paddy rice seriously＂three big plant diseases＂.The practice indicated that the anti-rice blast r-line resources＇ excavation use research,to breeds selectively the high production,high quality,the anti-rice blast hybrid rice combination to have the vital significance.The natural identification of Shanghang Fujian to a representative of the 162 seedlings in field blast materials,leaf blast and panicle blast incidence survey,overall performance of Shanghang Fujian for the identification of resistance in more than 62 anti-material recovery system indoor seedling identification of different strains,27 high resistance to the blast resistance of rice restorer lines with high generation of materials.Survey results showed that the seedling blast,leaf blast and panicle blast incidence rate was 3.01%,12.42% and 26.21%,seedling blast and leaf blast,seedling blast and neck blast,leaf blast and panicle blast incidence correlation 0.69,0.67 and 0.78,respectively,had reached a significant level.Panicle blast incidence was significantly greater than the seedling blast and leaf blast and panicle blast incidence at different times higher.Grade 4-5 plague vaccine,later identified neck blast is likely to be susceptible or highly susceptible.In this study,identification of panicle blast to susceptible or highly susceptible,seedlings or leaf blast identified generally susceptible or high feeling.

关 键 词：杂交稻 恢复系 稻瘟病抗性 

分 类 号：S511[农业科学—作物学]