水土保持通报2012，Vol.32Issue(2)：109-113,5.
苦豆子和苦马豆种子萌发对干旱胁迫的响应特征
Impact of Drought Stress on Germination of Sophora Alopecuroides and Swainsonia Salsula Seeds
摘要
Abstract
The effects of drought stress,simulated using polyethylene glycol（PEG-6000）（-0.03,-0.10,-0.24,-0.42,-0.65,-0.94 MPa）,were investigated on the germination of the seeds and the growth the seedlings of two plant species,Sophora alopecuroides L and Swainsonia salsula（Pall.） DC.which are dominant local species on the desert edge in the middle of Hexi Corridor.The results show that with increasing stress from PEG,water absorbing rate,germination percentage,germination index,vigorousness,seedling height,root length,and saturated water content of both species decreased,whereas dry weights of seedling and root,and crown-root ratio increased and then decreased.This indicates that appropriate drought stress might improve the drought resistance and then the quality of the seedlings.Possible causes for this adaptation to drought stress by the two species were explained and discussed.关键词
苦豆子/苦马豆/发芽率/吸水率/干旱胁迫Key words
Sophora alopecuroides L./Swainsonia salsula(Pall.) DC./germination rate/absorbing water rate/drought stress分类
农业科技引用本文复制引用
张勇,刘义,颜霞,鄂利锋,王进..苦豆子和苦马豆种子萌发对干旱胁迫的响应特征[J].水土保持通报,2012,32(2):109-113,5.基金项目
国家中医药管理局2012年中医药行业科研专项“甘肃省代表性区域中药资源保护利用” （）
河西学院校长基金 （）
