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用γ射线对２种来源的小麦矮腥黑穗病菌冬孢子进行了辐照处理。冬孢子相对死亡率和剂量的自然对数值呈直线相关。辐照剂量加大，相对死亡率上升。辐照剂量为４０万ｒｄ时即有较好的灭活效应。
Two kinds of winter wheat spores of Triticum aestivum were treated with γ ray. The natural logarithm of the relative mortality and the dose of teliospores is linearly correlated. Radiation dose increased, the relative mortality increased. Radiation dose of 400000 rd that has a better inactivation effect.