| Genetic analysis of blast resistance On rice cultivars with wide—spectrum resistance |
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| 作者姓名： | CHAIRongyao JINMinzhong ZHUANGJieyun ZHENGKangle |
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| 作者单位： | [1]ZhejiangAcadofAgriSci,Hangzhou310021 [2]CNRRIHangzhou310006,China |
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| 摘 要： | In recent years,indirect selection based ontightly linked genetic markers has been sug-gested to pyramid the resistance genes.How-ever,resistance parents used in the linkagestudies were usually near isogenic lines possessing a single resistance gene derived fromthe original resistance donor.Little was knownon the interaction among the genes at differentloci.In the present study,the genetic controlof blast resistance in two wide—spectrum re-vistance rice cultivars was analyzed.A susceptible indica varieties Xianfenglwas used as the female parent,and the blastresistance cultivars Tetep and Hongjiaozhanwere used as the male parents.The threeparental lines were inoculated with each of 20races of Pyricularia oryzae Cav at tilleringstage.The race ZC_(13) was selected to inoculatethe 161 F_3 lines of Xianfeng1/Tetep and 175 F,lines of Xianfengl/Hongjiaozhan.Eighteen in-dividuals of each line were inoculated.In both populations,all the individualsdemonstrated extreme reaction to the blast dis-ease.In the F_3 po
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| 关 键 词： | 水稻 频谱 抵抗力 基因分析 |
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