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近年来,小麦全蚀病在我国黄淮麦区的发生呈上升趋势,为了解该病菌的致病力及目前推广品种的抗病性,本研究比较了全蚀病菌致病力的3种接种测定方法和2种病情分级标准,结果表明以蛭石为培养基质、麦种下2cm接种菌丝块和0～6级的分级标准,可比较有效和准确地测定小麦全蚀病菌的致病力。对2010年分离自黄淮麦区河南、江苏、安徽、山东4省10地的52株小麦全蚀病菌进行了致病力测定,结果表明供试菌株的致病力存在明显差异。选取致病性较强的菌株G1037,对69个常用小麦品种进行了苗期抗全蚀病鉴定,结果表明供试小麦品种对全蚀病的抗性水平普遍较低,没有发现免疫和高抗的品种,泛麦5号和太空6号具有较强的抗(耐)性。
In recent years, the total eclipse of wheat in China’s Huanghuai wheat area is on the rise, in order to understand the pathogenicity of the bacteria and the current promotion of disease resistance of varieties, the study compared the pathogenicity of all etiolated pathogens of three kinds of inoculation Determination method and two kinds of disease grading standards. The results showed that vermiculite as the culture medium, 2cm inoculation of mycelium under wheat seedlings and 0 ~ 6 grade grading standards, can be more effective and accurate determination of pathogenicity of the total eclipse pathogen of wheat . The pathogenicity of 52 strains of total eclipses of wheat isolated from 10 areas of Henan, Jiangsu, Anhui and Shandong provinces isolated from Huanghuai wheat in 2010 was tested. The results showed that the pathogenicity of the tested strains was significantly different. The strain G1037 with strong pathogenicity was selected to identify 69 common wheat cultivars at the seedling stage. The results showed that the tested wheat cultivars were generally resistant to total echinococcosis and showed no immunity and high resistance Of the varieties, Pan Mai 5 and space 6 has strong resistance (tolerance).