^(60)Co-γ射线诱发谷稗和御谷的辐射生物学效应研究  

Biological effect of ^(60)Co-γ radiation on Echinochloa crusgalli and Pennisetum glaucum

作　　者：韩贵清[1] 韩微波[1] 张月学[1] 蒿若超[1] 唐凤兰[1] 刘杰淋[1] 袁冬梅[2] 

机构地区：[1]黑龙江省农业科学院草业研究所,黑龙江哈尔滨150086 [2]哈尔滨师范大学生物系,黑龙江哈尔滨150080

出　　处：《草业科学》2009年第8期97-100,共4页Pratacultural Science

基　　金：国家牧草产业技术体系(nyhyzx07-022);国家科技支撑计划(2008BAD97B07)

摘　　要：研究利用60Co-γ射线以10、20、30 Gy的剂量处理谷稗Echinochloa crusgalli和御谷Pennisetum glau-cum2种牧草种子,以未经处理的种子作为对照,进行了发芽、幼苗生长和根尖细胞染色体畸变的研究。结果表明,60Co-γ射线辐照抑制了谷稗和御谷的种子萌发,不同程度刺激了幼苗的苗高增高6。0Co-γ射线辐照后,谷稗和御谷的根尖细胞中出现了单微核、双微核、单桥、双桥等各类的染色体畸变类型。随着60Co-γ射线辐射剂量的增大,微核和染色体畸变率也逐渐增大,在30 Gy时达到最大。谷稗对于60Co-γ射线辐射的敏感性要大于御谷。The dry seeds of Echinochloa crusgalli and Pennisetum glaucum were irradiated by ^60Co-γ rays with 10, 20 and 30 Gy. The results shown that ^60Co-γ ray treatment reduced the germination rate, increased seedling height with different degree. Different chromosome aberrations observed in root tip cells, such as single micronucleus, double micronueleus, single bridge and double bridge. Micronucleus and chromosome aberrations rate were rising with the increase of ^60Co-γ ray dose. E. crusgalli was more sensitive to ^60Co-γ ray radiation than P. glaucum irradiated by.

关 键 词：谷稗 御谷 60Co-γ射线 微核 染色体 

分 类 号：S543.035.2[农业科学—作物学]