摘要： 本研究以小麦为试材,在不同水浸时间后,用NaN₃ 理M₁ 代和M₂ 代,观察其生理损伤和M₂ 代突变情况.结果表明NaN₃ 是一种高效诱变剂.国外有的学者认为NaN₃ 处理水,浸过的种子突变频率高,但本实验以NaN₃ 10^-3M,浸种风干种子2小时突变频率最高.故用NaN₃ 诱变小麦可直接处理干种子,既方便,效果又好.

关键词: 小麦, 突变, 变异

Abstract: This study dealt with the effect of NaN₃ on the physielogical damage of M₁ and the mutation frequency of M₂, when the wheat seeds were pre-soaked in water for different length of time.NaN₃ was an effective chemical mutagen. Some scientists from a broad believed that the highest mutation frequency was obtained when the pre-soaked wheat seeds were treated with NaN₃. But in this study, the mutation frequency was the highest when the dry wheat seeds were treated with NaN₃ (10^-3M, 2 hr.). So it was very effective, and convenient to treat dry wheat seeds with NaN₃.

Key words: Wheat, Mutation, Variation