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大豆科学  2008 

紫外线对大豆疫霉菌的诱导变异作用

DOI: 10.11861/j.issn.1000-9841.2008.03.0490, PP. 490-6495

Keywords: 大豆疫霉菌,突变,紫外线诱导

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Abstract:

为明确紫外线对大豆疫霉菌的诱导突变作用,研究了紫外线诱变的突变菌株的菌落形态、菌丝生长速率、菌丝形态、卵孢子形态、产孢能力、同宗配合能力、致病力和抗药性的变异情况。结果表明,大豆疫霉菌突变菌株菌落形态、菌丝生长速率、菌丝和卵孢子形态以及同宗配合能力都发生显著变异,游动孢子产孢量和致病性明显降低。虽未发现对甲霜灵产生抗性的突变菌株,但出现了对甲霜灵敏感性增强的突变菌株。说明紫外线辐射可导致大豆疫霉菌控制生物学性状和致病性的基因发生变异,紫外线可能是引致大豆疫霉菌变异的因素之一。

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