Effects on Agronomic Traits of M_1 by Pollen of Upland Cotton Irradiated by ^(60)Co-γ Ray  

^(60)Co-γ射线辐照陆地棉花粉后对M_1代农艺性状的影响(英文)

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：《Agricultural Science & Technology》2012年第3期525-528,532,共5页农业科学与技术（英文版）

基　　金：Supported by National Natural Science Foundation of China (10475041)~~

摘　　要：[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 with doses of 5, 10, 15, and 20 Gy, respectively, 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 species were richest at the same time, which provided materi- als for practical breeding. [Conclusion] 60Co-γ Ray of 15 Gy is more suitable for mutagenesis research on ripe pollen grains of upland cotton.[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、20Gy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10Gy时,M1大部分性状表现出明显变异,剂量为15Gy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15Gy的60Co-γ射线比较适宜于陆地棉成熟花粉粒的诱变研究。

关 键 词：Upland cotton 60Co-γ  Ray Irradiation Agronomic traits Genetic variation 

分 类 号：S562[农业科学—作物学]