首页 | 本学科首页   官方微博 | 高级检索  
     检索      

稻曲病菌产孢能力及致病力测定
引用本文:李燕,于俊杰,刘永锋,尹小乐,张荣胜,俞咪娜,陈志谊.稻曲病菌产孢能力及致病力测定[J].中国农业科学,2012,45(20):4166-4177.
作者姓名:李燕  于俊杰  刘永锋  尹小乐  张荣胜  俞咪娜  陈志谊
作者单位:江苏省农业科学院植物保护研究所,南京 210014
基金项目:国家公益性(农业)行业科研专项,江苏省自然科学基金
摘    要: 【目的】测定稻曲病菌(Ustilaginoidea virens)的产孢稳定性、产孢能力与致病力的相关性及在水稻品种上的致病性分化。【方法】采用液体培养和人工接种的方法对采自全国9个省(市)的150个稻曲病菌菌株进行产孢能力及田间致病力测定。【结果】3次产孢试验中产孢量标准偏差小于10.0的菌株有132个,占总数的88.0%。接种于两优培九(感病品种)的平均病情指数为67.7,其中98个菌株病情指数大于50;接种于淮稻5号(中等抗病品种)的平均病情指数为21.8;接种于武育粳3号(抗病品种)的平均病情指数为16.1,其中113个菌株病情指数小于25。稻曲病菌的产孢量与致病性呈正相关,但相关系数偏低,是中度—低度相关;根据150个稻曲病菌菌株在武育粳3号、淮稻5号和两优培九3个不同抗性品种上的致病力,将供试的150个稻曲病菌划分为7个致病类型,其中,第3致病类型(武育粳3号、淮稻5号和两优培九3个水稻品种表现为抗、抗、感)有53个菌株,占总数35.3%,为优势致病类型。【结论】稻曲病菌产孢性能较稳定,稻曲病菌的产孢量与致病力呈正相关。150个稻曲病菌菌株和3个不同抗性的水稻品种之间存在2种互作关系,大多数菌株与水稻品种抗性表现为弱互作关系,少数菌株与水稻品种抗性表现为强互作关系。

关 键 词:稻曲病菌  产孢  致病力  致病类型
收稿时间:2012-02-13

Determination of Sporulation and Pathogenicity of Ustilaginoidea virens
LI Yan , YU Jun-jie , LIU Yong-feng , YIN Xiao-le , ZHANG Rong-sheng , YU Mi-na , CHEN Zhi-yi.Determination of Sporulation and Pathogenicity of Ustilaginoidea virens[J].Scientia Agricultura Sinica,2012,45(20):4166-4177.
Authors:LI Yan  YU Jun-jie  LIU Yong-feng  YIN Xiao-le  ZHANG Rong-sheng  YU Mi-na  CHEN Zhi-yi
Institution:(Institute of Plant Protection, Jiangsu Academy of Agricultural Sciences, Nanjing 21 O014)
Abstract:【Objective】 The objective of this study is to test sporulation abilities and steady, pathogenicity, and relativity between the sporulation and pathogenicity of 150 strains of Ustilaginoidea virens. 【Method】A total of 150 strains of U. virens were collected from 9 provinces of China. Their sporulation abilities and pathogenicity were tested by liquid culture and artificial inoculation.【Result】The conidia-producing standard deviation of 132 strains was smaller than 10.0 in three conidia-producing tests, accounted for 88.0% of all strains. Three rice cultivars were inoculated with 150 strains. In the susceptible rice cultivar, Liangyoupeijiu, the average disease index of rice false smut was 67.7, the disease index of 98 strains were more than 50. In the medium resistance cultivar, Huaidao5, the average disease index was 21.8. In the resistant cultivar, Wuyujing3, the average disease index was 16.1, the disease index of 113 strains were shorter than 25. The results indicated that there was a positive relationship between the sporulation and pathogenicity, their correlation coefficient was on the low side, their correlation coefficient was medium-low. According to the pathogenicity of the 150 strains on three rice cultivars, they were divided into 7 pathogenic types. Pathogenic type III (resistant to Wuyujing 3 and Huaidao5, susceptible to Liangyoupeijiu) had 53 strains of U. virens, accounted for 35.3% of all strains, and it was a superior pathogen type. 【Conclusion】The sporulation of U. virens was steady. There was a positive relationship between the sporulation and pathogenicity. There were two interactions between 150 strains of U. virens and three rice varieties with different resistances, one was weak interaction which great majority strains showed, another was strong interaction which few strains showed.
Keywords:Ustilaginoidea virens  sporulation  pathogenicity  pathogenic type
本文献已被 CNKI 万方数据 等数据库收录!
点击此处可从《中国农业科学》浏览原始摘要信息
点击此处可从《中国农业科学》下载免费的PDF全文
设为首页 | 免责声明 | 关于勤云 | 加入收藏

Copyright©北京勤云科技发展有限公司  京ICP备09084417号