“实践八号”搭载8个苜蓿品种细胞学效应研究  

Study on the cytological effect of Medicago sativa embarked by satellite "Shijian8"

作　　者：杜连莹[1] 韩微波[2] 张月学[2] 徐香玲[1] 唐凤兰[2] 刘杰淋[2] 陈积山[2] 刘凤歧[2] 尚晨[2] 

机构地区：[1]哈尔滨师范大学生命科学与技术学院,黑龙江哈尔滨150025 [2]黑龙江省农业科学院草业研究所,黑龙江哈尔滨150086

出　　处：《草业科学》2009年第12期46-49,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);国家科技支撑计划

摘　　要：通过"实践八号"育种卫星搭载8个苜蓿Medicago sativa品种干种子,研究苜蓿根尖细胞学效应。研究结果表明,航天诱变促进了8个苜蓿品种的根尖细胞有丝分裂活动,龙牧803有丝分裂指数的辐射生物损伤增加的幅度最大,草原1号增加的幅度最小。同时,航天诱变诱发了8个苜蓿品种根尖细胞产生染色体断片、染色体粘连、游离染色体、落后染色体等畸变类型,染色体断片是主要畸变类型,Pleven6总畸变率最大,肇东苜蓿总畸变率最小,初步推断8个苜蓿品种中Pleven6对航天诱变的敏感性最高,肇东苜蓿的敏感性最低。The dry seeds of 8 alfalfa varieties embarked by satellite ＂Shjian 8＂ were used to study the cytological effect and the results indicated that the mitosis of root tip cell was increasedl, the biological damage of mitosis was increased and Longmu803 was the highest, Caoyuan 1 was the lowest. At the same time, there were different chromosome aberrations in root tip cells, including chromosome fragment, dissociative chromosomes, chromosome conglutination, lagging chromosome etc, the chromosome fragment was the main aberration type. The chromosome aberration rate of Pleven 6 was the highest and Zhaodong was the lowest. It could be concluded that Pleven6 was the most sensitive and Zhaodong was the most inactive varieties.

关 键 词：实践八号 苜蓿 有丝分裂指数 染色体畸变 

分 类 号：S541.9[农业科学—作物学]