苯甲酰胺对大豆辐射诱变效应的影响

本试验用苯甲酰胺、￣（６０）Ｃｏγ射线、电子束单因子及苯甲酰胺与￣（６０）Ｃｏγ射线、电子束复因子处埋大豆风干种子。结果表明，苯甲酰胺单因子处理，对大豆Ｍ１的苗高、成株率、孕性和根尖细胞染色体均无明显的影响，对其Ｍ２也无诱变效应。￣（６０）Ｃｏγ射线、电子束单因子处理，对大豆具有明显的损伤效应和诱变效应。苯甲酰胺与￣（６０）Ｃｏγ射线或电子束复因子处理，能明显增强Ｍ１的损伤效应，并能提高Ｍ２的诱变效应。苯甲酰胺具有抑制辐射损伤修复、提高诱发突变频率的作用。

EFFECT OF BENZAMIDE ON RADIATIVE MUTATION IN SOYBEAN

The experimental results of using single and contbined treatment of 60Co γ-ray,electronbeam and benzamide to air dryed soybean sceds are as follow. The seedling height of M1,mature plant rate, character of fertility and frequency of chromosomal aberration in roottip cells of M1 have not been obviously affected by single treatment of benzamide, Singletreatment has not mutagenic effect on M2 soybean. Combined treatment of 60 Co γ-ray, elec-tron and benzamide has an obvious damage effect and mutagenic effect on soybean; Abovecombined treatment can obviously enforce radiative damage effect tO soybean, The experi-mental result also shows that benzamide can inhibit repair of radiation damage and increasefrequency of mutation.