云南稻作资源特征特性及生态地理分布研究Ⅵ.稻瘟病抗性资源的多样性分布研究  

Characteristics and Geographical Distribution of Yunnan Rice Resources Ⅵ. Study on Distribution Diversity of Rice Blast Resistance Germplasm

作　　者：杨忠义[1] 卢义宣[2] 苏艳[3] 刘晓利[2] 奎丽梅[2] 杨自华 陈晓艳[1] 曹永生[5] 

机构地区：[1]云南省农业科学院生物技术与种质资源研究所,云南昆明650223 [2]云南省农业科学院粮食作物研究所,云南昆明650205 [3]云南省农业科学院质量标准与检测研究所,云南昆明650205 [4]陆良县种子站,云南陆良650000 [5]中国农业科学院作物科学研究所,北京100081

出　　处：《西南农业学报》2009年第4期936-941,共6页Southwest China Journal of Agricultural Sciences

基　　金：国家科技基础条件平台重点项目(2005DKA318003);云南省科技攻关及高新技术发展计划项目(2006NG03);国家科技支持计划(2006BAD0101-1;2006BAD0101-7)

摘　　要：采用GIS、BioDiversity等技术,基于云南不同的稻作气候生境条件,分析了4763份苗瘟、4420份叶瘟和4251份穗颈瘟抗性多样性在不同气候类型和各类稻区中的表现,其结果为:①不同气候带对稻瘟病抗性多样性的形成有显著作用;②穗颈瘟抗性多样性在热带和亚热带高,温带低,有随海拔的升高、温度的降低而减小,反之增大的趋势,南亚热带、中亚热带、北亚热带是稻瘟病多样性富聚区域;③稻区内稻类型复杂,稻瘟病抗性多样性就丰富,多样性与稻种类型息息相关。其结果为利用稻瘟病抗性多样性控制稻瘟病提供了依据。此外,通过对稻瘟病抗性多样性的分析研究,挖掘了289份值得研究利用的优异的稻瘟病抗性资源。Based on the climatic types and rice regions of Yunnan, diversities of 4763 accessions seedling blast resistance ,4420 accessions leaf blast resistance and 4251 accessions panicle blast resisitancc were analyzed with the technique GIS and BioDiversity. The result shows that： （i） Climatic types made remarkable functions to diversity of rice blast resisitant. （ii） It presented high diversity of panicle blast resistmace in tropical zone and lower diversity in temperate zone. The diversity decreased with the increasing of altitude and the reduction of temperature and increased in the other way. The diversity of rice blast resistance were mainly concentrated in the south, medium and north subtropics. （iii）The diversity and type of rice germplasm was correlated. It presented high diversity when rice germplasm type various in a rice region. The results obtained in this study provide evidence for improvement of rice blast resistance by the diversity. 289 elite varieties for rice blast resistance were identified in this research.

关 键 词：稻瘟病抗性 资源 多样性 生态地理分布 

分 类 号：S435.111.41[农业科学—农业昆虫与害虫防治]