云南省部分稻种资源稻瘟病抗性评价及基因分析

 对366份地方品种进行了稻瘟病叶瘟鉴定及评价。结果表明,陆稻地方品种中高抗的品种最多,占36.7%;其次是籼稻地方品种,占6.3%;粳稻最少,仅占2.2%。对16个高抗稻瘟病的陆稻地方品种进行基因分析,发现9个品种对所测试菌株受2对基因控制,7个品种对所测试菌株受3对基因控制。这些陆稻地方品种是发掘和定位新的抗稻瘟病基因以及抗性育种的重要素材和抗源。

Evaluation and Genetic Analysis on Resistance toRice Blast in Some Yunnan Rice Resources

Three hundred and sixty six Yunnan rice indigenous varieties were identified and evaluated for resistance to rice blast.The result manifested that the percentage of upland rice with high blast resistance is the highest(36.7%), indica rice is higher(6.3%), japonica rice is the lowest(2.2%).In this study, sixteen upland rice varieties were carried out on genetic analysis for resistance to rice blast. In nine upland rice varieties, resistance to isolate Y34(001) was controlled by two resistance genes. Resistance to isolate Y34(001) was controlled by three resistance genes in seven upland rice varieties. These upland rice varieties are important material and resistant resources to rice blast for finding and locating new resistant gene and resistant breeding.