^(60)Co-γ射线辐照陆地棉花粉后对M_1代农艺性状的影响  

Analysis on Variation of Agronomic Traits of Upland Cotton(Gossypium hirsutum L.) in M_1 Progeny Irradiated by ^(60)Co-γ Ray

作　　者：岳洁瑜[1,2] 唐灿明[2] 

机构地区：[1]天津师范大学生命科学学院天津市细胞遗传与分子调控重点实验室,天津300387 [2]南京农业大学农学院,江苏南京210095

出　　处：《安徽农业科学》2012年第2期685-687,742,共4页Journal of Anhui Agricultural Sciences

基　　金：国家自然科学基金项目(10475041)

摘　　要：[目的]利用不同剂量的60Co-γ射线辐照一陆地棉常规栽培种成熟花粉粒,为棉花花粉辐射育种研究提供参考。[方法]分别利用剂量为5、10、15、20 Gy的60Co-γ射线对陆地棉成熟花粉粒进行辐照处理,了解辐射效应,筛选适宜剂量。[结果]当剂量大于10 Gy时,M1大部分性状表现出明显变异,剂量为15 Gy时对棉花当代的生活力、生长势、育性等抑制作用最大,基本为半致死剂量,但田间出现的变异类型也是最丰富的,有利于为实际育种选育材料。[结论]剂量为15 Gy的60Co-γ射线比较适宜于陆地棉成熟花粉粒的诱变研究。Objective The aim was to provide reference for research on radiation and breeding of cotton pollen through irradiating common ripe pollen grain of upland cotton by 60Co-γ Ray of varied doses.[Method] Ripe pollen grains of upland cotton were irradiated by 60Co-γ Ray of doses of 5,10,15,and 20 Gy,to learn radiation effect and select appropriate dose.[Result] Most properties of M1 obviously showed variation when dose was over 10 Gy;vitality,growth,and fertility were greatly inhibited when dose was 15 Gy which was almost semi-lethal concentration,and variation varieties were most at the same time,which provided materials for practical breeding.[Conclusion] 60Co-γ Ray of 15 Gy was more suitable for inducing research for ripe pollen grains of upland cotton.

关 键 词：陆地棉 ^60C0-Y射线 辐射 农艺性状 遗传变异 

分 类 号：S132[农业科学—农业基础科学]