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稻瘟病是水稻主要病害之一。选用抗病丰产良种是防治稻瘟病最经济而有效的一种方法。但一些抗病品种在推广过程中会逐渐丧失抗病性。如过去在我省推广的抗病品种珍汕97、窄叶青8号等,现在都变成感病品种,给生产带来很大损失。据研究,稻瘟病菌存在致病力不同的生理小种。因此,生理小种的研究与水稻品种的抗性鉴定、选育、利用、布局和品种抗性丧失的预测关系极为密切。现将我们分赴全省各地采集分离的127个单孢菌株,用全国统一鉴别品种特特普,珍龙13、四丰43、东农363、关东51、合江18、丽江新团黑谷和试验方法进行鉴定的结果报道于下。
Rice blast is one of the main diseases of rice. Selection of disease-resistant high yielding variety is the most economical and effective way to control rice blast. However, some resistant varieties will gradually lose their disease resistance during the promotion process. As in the past in the province to promote the resistant varieties Zhenshan 97, narrow leaf green No. 8, etc., are now become susceptible varieties, to produce a great loss. According to the research, the pathogenicity of M. grisea exists in different physiological races. Therefore, the study of physiological races is closely related to the prediction of resistance identification, breeding, utilization, layout and variety resistance of rice varieties. We will now be divided throughout the province collected 127 isolates of Monosodium glutamate strains, with a unified national identification varieties Tetep, Zhenlong 13, Si Fung 43, Dongnong 363, Kanto 51, Hejiang 18, Lijiang New Group Black Valley And test methods to identify the results reported below.