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当前,在稻瘟病的研究和防治中,对水稻品种抗病性的“退化”,病菌小种的鉴定及小种的变异等问题,存在不同的看法。笔者在云南省农业科学院工作期间,曾于一九七八年参加了“云南省稻瘟病菌小种研究协作组”的部分工作。从试验结果中见到一些与上述问题有关的而且发人深思的现象。现特整理为文,以就教于同道。一、用“鉴别品种”鉴定属于同一小种的分离菌,对其他品种的致病性表现不一致鉴定稻瘟病菌小种时,一般都是在一定的控制条件下,将分离菌分别接种到选定的
At present, there are different opinions on the “degeneration” of disease resistance, the identification of germ races and the variation of races in the research and control of rice blast. During his work in Yunnan Academy of Agricultural Sciences, the author participated in a part of the work of “Collaborative Research Group on Pyricularia oryzae Species in Yunnan Province” in 1978. From the test results, we see some thought-provoking phenomena related to the above problems. Now special finishing for the text, to teach in the same way. First, the use of “identification varieties” to identify belong to the same race of isolates, the pathogenicity of other varieties of inconsistent Identification of races of Magnaporthe grisea, are generally under certain control conditions, the isolates were inoculated to the election Set