文献类型： 会议论文
第一作者： Li Xiaofang
作者： Li Xiaofang 1 ; Luo Wenyong; Xiao Xin; Mao Xingxue; Liu Yanzhuo;
作者机构： 1.Guangdong Key Laboratory of New Technology in Rice Breeding, Rice Research Institute, Guangdong Academy of Agricultural Sciences, Guangzhou 510640
关键词： rice;blast resistance;SSD assemblage
会议名称： Promoting global innovation of agricultural science & technology and sustainable agriculture development,Session 4
主办单位：
页码： 148-157
摘要： The study used Waixuan 35, a blast resistant rice material adopted widely before in South China, Yuexiangzlian, a rice variety with largest planting area in Guangdong Province at present and with the characteristics of horizontal blast resistance andhigh harvest index, and Qisizhan, the earliest good eating quality variety in Guangdong as parent materials, and created an important material system for studying agricultural characters such as rice blast resistance genes, their resistance mechanisms and quality by hybridization offspring single grain transfer method and DNA hybridization method, namely single seed descent SSD, extend single seed descent ESSD and transferred-mutant single seed descent TSSD assemblages, In SSD assemblage, various materials of resistance gene combinations for identifying rice blast pathogen strains had been identified from the material system, providing direct material evidence for gene to gene theory. Using the same control and same method, in ESSD assemblage, it was proved that there were several main resistance genes and several minor resistance genes in horizontal resistant Yuexiangzhan, providing preliminary evidences for multigene control in horizontal resistance. A set of stable material assemblage for studyingfuture horizontal resistance had been created. A mutation material of Yuexiangzhan from horizontal resistance to vertical resistance was obtained by wild rice external DNA electric stimulation introduction, and variation in mutation assemblage was certified by SSLP. These studies and materials provided important new materials for studying rice blast resistance mechanisms, gene cloning, resistance genes especially horizontal resistance.
分类号： S
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DISCUSSIONS ON THE REFORM OF AGRICULTURAL RESEARCH INSTITUTES
作者：Li Xiaofang
关键词：Reform of Agricultural Scientific and technological System;Public Institute;Agricultural Enterprises Rice
