摘要
以美国航空航天局（ＮＡＳＡ）提供的经空间飞行处理的番茄种子（ＳｅａｃｅＥｘｐｏｓｅｄＳｅｅｄ，ＳＥＳ）和地面对照种子（Ｅａｒｔｈ—ｂａｓｅｄＳｅｅｄＥＢＳ）为材料，研究了空间飞行对番茄种子发芽力和幼苗生长的作用。结果表明，ＳＥＳ发芽迅速、均匀，其发芽势和发芽率分别比ＥＢＳ高２６．５％和５．３％．表现出较强的发芽力；发芽后５ｄＳＥＳ的芽长和根长分别是ＥＢＳ的２．４倍和２．７倍，活力指数是ＥＢＳ的４．１倍，表明空间飞行可显著提高番茄种子的活力。
The difference in seed vigor between the space exposed seed (SES)and the earth based seed (EBS) of tomato which provided kindly by NASA was studied comparatively. The SES showed higher germinating potentiality and germinating rate by 26. 5 % and 5. 3 9; as aganist the EBS respectively. Five days after germination, the average root alld bud length of SES were 2. 7 and 2. 4 times longer than that of EBS respectively. the vigor index was also much higher than that of EBS. Thus. the seed- vigor of tomato was increased markedly after flight.
出处
《湘潭师范学院学报（社会科学版）》
1995年第6期58-60,共3页
Journal of Xiangtan Normal University(Social Science Edition)
基金
湖南省教委资助
关键词
空间飞行
番茄种子
发芽势
发芽率
种子活力
Space flight
tomato seed
germinating potentiality
germinating rate
seed vigor
