草业学报2011，Vol.20Issue(3)：84-90,7.
盐分胁迫对紫穗槐幼苗生理生化特性的影响
Effect of salt stress on physiological and biochemical characteristics of Amorpha fruticosa seedlings
摘要
Abstract
Physiological characteristics of Amorpha fruticosa leaves, including photosynthetic rate, enzyme activity, organic osmolytes etc. were studied under different soil salt concentrations. The mechanism of salttolerance in A. fruticosa is discussed. The net photosynthesis rate (Pn), transpiration rate (Tr), stomatal conductance (Gs) and the content of K+ decreased with reduced severity of salt stress, while the activities of SOD and POD, the contents of soluble sugar, free praline (Pro) and Na+ noticeably increased. The contents of chlorophyll a (Chla), chlorophyll b (Chlb), total chlorophyll (Chl) and carotenoid pigment increased along with the increase in soil salt concentrations, but, the ratio of Chla/Chlb showed no significant change. The results show that the improvement of leaf salt-tolerance in A. fruticosa seedlings resulted from the modulation of physiological characteristics and A. fruticosa had certain salt-tolerant characteristics.关键词
紫穗槐/盐胁迫/生理生化特性Key words
Amorpha fruticosa/ salt stress/ physiological and biochemical characteristics分类
农业科技引用本文复制引用
邹丽娜,周志宇,颜淑云,秦彧..盐分胁迫对紫穗槐幼苗生理生化特性的影响[J].草业学报,2011,20(3):84-90,7.基金项目
国家重点基础研究发展规划项目资助(973项目)(2007CB108903),甘肃省重大科技项目(2GS063-A31-010)和国家自然科学基金项目(30800801)资助. （973项目）
