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白菜对病毒病、霜霉病和黑斑病苗期人工接种和田间自然诱发相结合的三抗性鉴定与筛选方法标准包括品种试材安排,接种体准备,接种苗龄,接种顺序,病原适比浓度,鉴定与筛选环境条件,病害的诱发措施和管理,调查方法及病情分级标准,抗病与感病指标,筛选技术和规程等。
The standard methods for the identification and screening of three resistances of cabbage to virus disease, downy mildew and black spot disease at the seedling stage and the natural induction in the field include the arrangement of the cultivars, inoculum preparation, inoculation seedling age, inoculation order, pathogen Appropriate concentration, identification and screening of environmental conditions, disease induced measures and management, methods of investigation and grading standards, disease resistance and susceptibility indicators, screening techniques and procedures.