水稻优良恢复系R2106及其组配杂交组合的稻瘟病抗性改良和农艺性状评价

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1、·目录摘要...........................................................................................................1Abstract.....................................................................................................31文献综述..............................................................

2、..................................91.1水稻稻瘟病研究概况.....................................................................91.1.1稻瘟病的种类和发病特征....................................................91.1.2稻瘟病病菌…………………................................…....101.1.3防治方法.......................................

3、.......................................151.2水稻稻瘟病抗性基因研究进展及在育种中的应用...................171.2.1稻瘟病抗性基因的鉴定和定位..........................................171.2.2水稻抗稻瘟病基因的克隆..................................................191.2.3水稻抗稻瘟病基因在育种上的应用..................................212研究的目的与意义.........

4、.....................................................................213材料与方法……………………………………….....................…..223.1供试材料………………………………………..................….223.2含有纯合Pi9基因且农艺性状优良的株系获得........................223.3转育后代株系与所配组合PCR检测..........................................233.4病圃的选择与病圃稻瘟病菌

5、遗传多样性...................................253.5稻瘟病抗性鉴定……….......................................................253.6目标株系及其杂交组合的主要农艺性状考查...........................263.7目标株系及其杂交组合的稻米品质分析……………….........263.8目标株系及其杂交组合的稳产性分析.......................................27···8万方数据···4结果与分析.............

6、..............................................................................264.1改良R2106后代及其配组合的Pi9基因检测...........................254.2R2106改良后代及所配组合稻瘟病抗性结果.........................281.1.1R2106改良株系后代稻瘟病圃自然诱发鉴定结果........301.1.2R2106改良株系后代所配组合稻瘟病圃自然诱发鉴定结果...................................

7、............................................................................304.3R2106抗稻瘟病改良株系及其配组合农艺性状表现.............331.2.1R2106改良株系后代农艺性状表现………………......331.2.2R2106改良株系后代所配组合农艺性状表现................334.4R2106抗稻瘟病改良后代及所配组合稻米品质性状表现…..353.1R2106改良株系后代稻米品质性状表现....