水稻不同类型品种上的稻瘟病菌群体小种的演变  

Race evolution of Magnaporthe grisea on different rice varieties

作　　者：柴荣耀[1] 杜新法[1] 毛雪琴[1] 孙国昌[1] 陶荣祥[1] 金敏忠[1] 

机构地区：[1]浙江省农业科学院植物保护研究所,杭州310021

出　　处：《浙江农业学报》1999年第6期297-300,共4页Acta Agriculturae Zhejiangensis

基　　金：浙江省科技攻关项目!961102175

摘　　要：根据１９９５－１９９８年浙江省稻区稻瘟病菌生理小种的鉴定结果，选择适当的病菌和品种互作组合，通过继代接种实验模拟研究水稻不同类型品种上的稻瘟病菌演变。结果表明，浙江省稻区稻瘟病菌群体组成复杂，籼、粳稻品种上的稻瘟病菌类型存在较大差异，稻瘟病菌和水稻品种继代互作后不同品种上病菌群体中小种比例发生了明显变化，多数品种上菌系组成出现了小种优势，不同类型品种上发生的优势小种差异是导致田间病菌群体组成时常变化的根本原因。上述研究对于品种的合理推广应用和抗病性丧失预测具有重要意义。Race evolution of Magnaporthe grisea on different rice varieties were studied on the basis of physiological races of M. grisea in Zhejiang Province during 1995-1998. The results showed that the populations of M. grisea race in Zhejiang Province were complex,there was distinct difference of kinds of M.grisea race between indica and japonica. Percentages of races on different rice varieties had changed by re-inoculating the tested varieties from generation to generation. Predominant races on different rice varieties was the basic reason that influences the changed of Physiological race of the pathogen.

关 键 词：稻瘟病菌 小种演变 水稻品种 

分 类 号：S435.111.4[农业科学—农业昆虫与害虫防治]