以 3个普通小麦品种为材料 ,用60 Coγ射线辐照小麦幼胚愈伤组织 ,在MR1、MR2 代中都观察到广泛变异 ,其后代在育性、株高、抽穗期、千粒重、株型、蛋白质含量等方面都发生了明显变异 ,这些变异较单纯用组织培养得到的无性系的后代的变异频率更大 ,变异范围也更为广泛 ,并且从MR2 中得到了几个有较高利用价值的变异株系 Three common wheat cultivars were used as materials to irradiate wheat immature embryos with 60 Co γ ray. Variation was observed in both MR1 and MR2 generations. The offspring showed significant differences in fertility, plant height, heading date, 1000-grain weight, plant type , Protein content and other aspects of the significant changes have occurred, these mutations than purely tissue culture derived clones offspring mutation frequency greater variation range is also more extensive, and obtained from MR2 several have high value Variant strains