云南作物资源特征特性及生态地理分布研究XⅢ稻抗病性资源的多样性分布研究  

Characteristics and Geographical Distribution of Yunnan Crops Resources XⅢ.Study on Distribution Diversity of Rice Germplasm in Disease Resistance

作　　者：杨忠义[1] 苏艳[2] 刘义富[3] 卢义宣[3] 刘晓利[3] 奎丽梅[3] 陈晓艳[1] 曹永生[4] 

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,昆明650223 [2]云南省农业科学院质量标准与检测研究所,昆明650205 [3]云南省农业科学院粮食作物研究所,昆明650205 [4]中国农业科学院作物科学研究所,北京100081

出　　处：《植物遗传资源学报》2010年第5期611-615,共5页Journal of Plant Genetic Resources

基　　金：国家科技基础条件平台重点项目(2005DKA31800-3);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：基于云南丰富的稻作生境和多样的稻种资源,分析了稻瘟病（苗瘟、叶瘟、穗颈瘟）和白叶枯病综合抗病性及多样性在不同气候类型、各类稻区和气温中的差异表现,其主要结果有：稻抗病性多样性富聚程度与气候环境因素关系密切,其中温度对抗病性多样性影响较大;抗病性多样性指数从南亚热带→中亚热带→北亚热带→北热带→南温带→中温带→北温带逐渐减小,反之增大;气候带可分为多样性富聚区（南亚热带、中亚热带、北亚热带、北热带和南温带）和多样性低富聚区（中温带和北温带）,其中南亚热带是抗病性多样性最为富集的气候带;温度是影响稻抗病性多样性主要因子,18±1℃是稻抗病性多样性富集程度变化的分度点,13.1-21.0℃之间为抗病性多样性的富聚区。此外,挖掘了24份值得研究利用的优异稻抗病资源。There were diverse rice germplasm in Yunnan province for its diverse environmental types of rice cultivations.The comprehensive anti-disease and anti-disease diversity of rice blast（Pyricularia seedlings,leaf blast,panicle blast）and bacterial leaf-blight of different rice germplasm were observed and analyzed.The results showed that the comprehensive disease resistance and disease resistance diversity were closely related to the environmental factors.Among all the factors,the temperature was the main influence factor for the disease resistance diversity.The diversity of disease resistance was South subtropical zone（SST）〉Medium subtropical zone（MST）〉North subtropical zone（NST）〉North tropical zone（NT）〉South temperate zone（ST）〉Medium temperate zone（MT）〉North temperate zone（NTS）.The climate zones can be divided into diversity enrichment zone（SST、MST、NST、 ST） and low diversity zone（MT and NTS）,and the SST was the most enrichment zone.According to the temperature,the zones with 13.1-21.0℃ were the enrichment zones and 18±1℃ was the variety calibration point of rice disease resistance diversity enrichment degree.In addition,it also excavated 24 elite disease resistance germplasm for research further.

关 键 词：稻种资源 抗病性 多样性 生态地理分布 

分 类 号：S511[农业科学—作物学]