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以反应型作为苗期抗性鉴定和生理小种鉴定等,有周期短、效率高和标准较严的特点,但目前国内有关单位采用的分型标准不尽一致。通过对9000多个品种的观察认为,分型中常有些描述是属特殊条件下的偶然现象,用于分型将干扰主要特征的观察,影响记载准确性。现提出以病斑大小、厚薄和多少为分型依据的方法,简单、便于掌握、记载也较准确: 0型:免疫,植株无病斑; 0;型:坏死反应,叶片有枯死斑; 1型:高抗,病斑小(一般直径小于1mm)菌丝层稀薄可见绿色叶面,偶见较大
Reactive species as seedling resistance identification and identification of physiological races, short cycle, high efficiency and standards more stringent characteristics, but the current domestic units involved in the classification criteria are not consistent. Through the observation of more than 9,000 varieties, some descriptions in classification are often accidental phenomena under special conditions. For classification, interference with the observation of main features will affect the accuracy of records. Now put forward to lesion size, thickness and how much is based on the classification method, simple, easy to grasp, the record is also more accurate: 0 type: immune, plant disease-free; 0; type: necrosis reaction leaves withered spots; Type: high resistance, lesion small (usually less than 1mm in diameter) Mycelium thin visible green foliage, occasionally larger