以小麦作材料,用钻-60γ射线照射小麦花粉、子房、孕穗期植株、抽穗期植珠、花末期植株,计算了当代结实率,调查了M_1大田植株成活率和M_2的突变频率以及突变体分类。结果表明,辐照小麦活体,其适宜照射量为0.206～0.516C/kg(800～2000R),比照射小麦干种子低10个数量级,其突变频率,有益突变频率、有益突变体百分比分别比辐照小麦干种子提高50～57％,22～34％和83～127％。在同一照射量内,小照射量率比大照射量率的辐射效应明显。适宜的照射量率为每分钟7.74～12.9mC/kg(30～50R)。 Wheat was used as material and wheat-pollen, ovary, booting plant, heading stage and flowering stage plants were drilled by drilling -60γ ray, and the seed setting rate was calculated. The survival rate of M_1 field and M_2 mutation frequency and mutation Body classification. The results showed that the suitable irradiance of wheat was 0.206-0.516C / kg (800-2000R), which was 10 orders of magnitude lower than that of irradiated wheat seeds. The frequency of mutation, the frequency of beneficial mutation and the percentage of beneficial mutant were According to dry wheat seeds increased by 50 to 57%, 22 to 34% and 83 to 127%. In the same amount of radiation, a small radiation dose rate of radiation than the large radiation effect is obvious. Appropriate exposure rate of 7.74 ~ 12.9mC / kg per minute (30 ~ 50R).