【摘要】 采用人工控制的土壤接种方法,对玉米丝黑穗病[Sporisorium reilianum(Kühn)Langdon&Fullerton]病菌不同接种菌土浓度与发病程度的关系进行了研究。结果表明,土壤接菌量与玉米丝黑穗病发病率关系密切,供试玉米品种的丝黑穗病发病率均随着接种菌土浓度的增加而增加,当接种菌土达到一定浓度后,发病率不再显著提高。抗性材料的接种浓度达到3‰以上时其发病率不再显著提高。因此,在玉米抗病育种中可采用3‰接种菌土浓度筛选抗病种质或品种。更多还原

【Abstract】 Under artificial inoculation, the relationship between incidence of Sporisorium reilianum of maize and the amount of inoculums in soil was studied, the result showed that the close relationship between the amount of inoculums in soil and disease incidence and severity of maize had smut. With the soil inoculums density increased, the disease incidence was increasing in tested maize varieties, while an inoculums density to attain certain density, the disease incidence was no longer increase obviously. As resistant varieties, the certain density was 3‰. Therefore, inoculums density at 3‰ was suitable for screening the resistance to head of maize in maize breeding.更多还原