低剂量辐射对小麦与窄颖赖草属间杂交的促进与损伤双重效应  

DUAL EFFECT OF LOW DOSE OF IRRADIATION ON WHEAT× Leymus angustus: ENHANCEMENT AND DAMAGE

作　　者：李桂英[1] 王琳清[1] 施巾帼[1] 

机构地区：[1]中国农业科学院原子能利用研究所,北京100094

出　　处：《核农学报》2003年第3期184-186,共3页Journal of Nuclear Agricultural Sciences

基　　金：国家自然科学基金资助项目 (39770 4 5 7)

摘　　要：以小麦、窄颖赖草为材料 ,研究了低剂量γ射线辐照花粉对远缘杂交的作用。结果表明 ,适宜低剂量 (5～ 9Gy)辐照花粉能克服杂交不亲和性提高杂交结实率 ,但同时也有一定损伤 ,种子胚胎发育受到一定影响 ,表现出低剂量辐射的双重效应。The effects of low dose of γ irradiation on wheat× Leymus angustus were studied.The results showed that appropriate low dose of irradiation can overcome the cross incompatibility and enhance seed setting,on the other hand,restrain the development of hybrid embryos and make rate of seed containing embryos decrease.When irradiation is used to enhance wide hybridization,the damage of low dose of γ irradiation should be considered.

关 键 词：小麦 窄颖赖草 属间杂交 低剂量辐射花粉 杂交不亲和性 杂交结实率 种子胚胎发育 双重效应 

分 类 号：S512.1[农业科学—作物学]