γ射线辐照对剑麻H.11648种子发芽及幼苗生长的影响  

The Effects of γ-Rays Irradiation on Seeds Germination and Seedlings Growth of Agave H.11648

作　　者：李俊峰[1,2] 周文钊[1,2] 陆军迎[1,2] 张燕梅[1,2] 徐宏[3] 黄志勇[3] 黄燕萍[3] 

机构地区：[1]中国热带农业科学院南亚热带作物研究所,广东湛江524091 [2]海南省热带作物营养重点实验室,广东湛江524091 [3]江西省农业科学院原子能应用研究所,南昌330200

出　　处：《中国麻业科学》2016年第2期49-53,共5页Plant Fiber Sciences in China

基　　金：中国热带农业科学院南亚热带作物研究所基本科研业务费专项资助(1251022011010);现代农业产业技术体系(CARS-19)

摘　　要：为研究γ射线辐照对剑麻的生理生化变化的影响,用6个不同剂量的^(60)Coγ射线辐照处理剑麻H.11648的干种子,测定处理后种子的萌芽率,以及种子萌芽后幼苗叶片的超氧化歧化酶(SOD)活性和丙二醛(MDA)含量,观测辐照对幼苗生长的影响。结果表明:30 Gy的辐照对剑麻H.11648种子萌发具有促进作用,较高剂量的辐照对种子萌发有抑制作用,且随着剂量的增大,抑制作用增强;幼苗叶片SOD酶的活性和MDA含量均随着辐照剂量的增加先升高后降低;辐照对幼苗的生长有抑制作用,剂量越高抑制作用越强。The objective of this study was to evaluate the effects of irradiation with different doses（ 0,30,60,90,120 and 150 Gy） of60Coγ rays on germination,the activity of superoxide dismutase（ SOD） and the content of malondialdehyde（ MDA）. And seedlings growth of agave（ Agave H. 11648）were investigated. The seed germination was promoted at low- dose irradiation,but was inhibited at higher- dose. The activity of SOD and the content of MDA were gradually increased with the increase of the dose,reached to peak,and then decreased. Therefore,the growth of the seedlings were inhibited by60Coγ- rays,the dose was more,and inhibition was higher.

关 键 词：60Coγ射线 剑麻H.11648 种子萌芽 SOD酶 MDA含量 

分 类 号：S563.8[农业科学—作物学]