空间环境对紫花苜蓿的生物学效应  

BIOLOGICAL EFFECT OF AEROSPACE ENVIRONMENT ON ALFALFA

作　　者：张月学[1] 刘杰淋[1] 韩微波[1] 唐凤兰[1] 蒿若超[1] 尚晨[1] 杜优颖[1] 李佶凯[1] 王长山[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：《核农学报》2009年第2期266-269,共4页Journal of Nuclear Agricultural Sciences

基　　金：公益性行业(农业)科研专项(nyzx07-022);国家科技支撑计划(2008BAD97B07);黑龙江省科技攻关(GB06B109-3)

摘　　要：利用返回式卫星搭载2个不同基因型紫花苜蓿品种的干种子,观察其细胞有丝分裂数和微核数与对照的差别。结果表明,空间环境促进了苜蓿种子根尖细胞的有丝分裂活动,并有一定数量的微核产生;空间搭载还引起了紫花苜蓿发芽率和苗期致畸率的变化;同时在田间分枝数和鲜重产量指标上品种间变化不同。在细胞学和苗期变异上,肇东苜蓿对辐射敏感性大于龙牧803,在田间分枝数和鲜重产量上肇东苜蓿的损伤程度高于对照,大于龙牧803。The biological effect of aerospace environment on two varieties of Medicago sativa L. was studied. In M1 germination results showed that aerospace environment increased cell division and the number of micronucleus, changed germination rate, caused seedling aberrations. Cytogenetical and seedling aberration of Zhaodong showed more sensitive than Longmu 803. Branches and fresh weight of Zhaodong had shown more serious damage than control and Longmu 803 .

关 键 词：苜蓿 空间诱变 微核 生物学效应 

分 类 号：S541.9[农业科学—作物学] TU984.12[建筑科学—城市规划与设计]