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大豆疫霉菌对甲霜灵抗性风险的研究

DOI: 10.7685/j.issn.1000-2030.2013.01.009, PP. 47-51

Keywords: 大豆疫霉菌,甲霜灵,抗药性风险,生物学特性,致病性

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Abstract:

为了评估大豆疫霉对甲霜灵是否存在抗性风险,采用药剂驯化的方法诱导获得了大豆疫霉菌抗甲霜灵突变株hlj34M,并对其适生性进行了初步研究。该突变体菌丝生长速率、游动孢子产量和致病力与野生型相比没有显著变化。而卵孢子产量明显减少,突变体的3个单游动孢子后代的卵孢子产量与亲本菌株相比分别减少20.35%、43.63%和43.85%,统计分析差异达极显著水平。结果表明甲霜灵的长期使用会导致大豆疫霉对其产生较大的抗性风险。

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