摘要
通过第１７颗返回式卫星搭载５个水稻品种的干种子，进行空间诱变处理，研究其细胞学效应。结果表明，空间环境对根尖细胞染色体有一定的致畸作用，又能促进根尖细胞的有丝分裂活动，经空间飞行的水稻染色体畸变细胞率极显著高于地面对照组。与γ射线和质子处理相比较，空间环境对染色体的致畸效应较低，而有丝分裂指数极显著大于质子和γ射线处理。
Air dried seed of 5 rice varieties were carried by recoverable satellite(RS) for space mutation.The cytological effects in M 1 was studied.The results showed that the space environment could cause chromosomal structure aberration,and had a stimulating mitosis effect on root tip cells.The cell rate of chromosomal aberration of space flown rice was greater than that of ground controls. As compared with γ rays and protons,the effects of space environment were weaker on chromosomal aberration,but were significantly strongher on mitosis index.
出处
《核农学报》
CAS
CSCD
1998年第5期269-273,共5页
Journal of Nuclear Agricultural Sciences
基金
国家科委资助
农业部资助
关键词
空间环境
细胞学效应
水稻
Space environment,cytological effects,rice
