【摘要】 <正> 自五十年代起,我国就已开展了辐射遗传育种工作,但所用的外照射源多为 X 射线、γ射线和中子源等,而电子束用于植物诱变育种和植物辐射遗传方面,则刚刚开始。当前在国际上,电子直线加速器也多用于塑料加工、涂料的辐射固化、医疗器械、辐射消毒和环境保护等方面。为了充分发挥电子束在植物遗传育种中的作用,我们从1979年下半年开始,利用国产更多还原

【Abstract】 The electron beam from lineal accelerator Model BF-5 was used to irra- diate the air-dried seeds of barley with dosage from 18 to 39 krads.The frequency of chromosome aberration in the root tips of M₁ amounts to 40%- 60%.The frequency of chlorophyll deficient mutation in M₂ seedlings amounts to 8.6%-17.7%.The morphological muta tions of M₂（including dwarfness of culm,shape of awn,length of spike,type of awn,length of spike,type of spike,etc.）are approximately 1.60-5.51%.Changes in lipase isoenzyme spectrum appear in mutants as compared with the control.更多还原