Effect of salt stress on physiological and biochemical characteristics of Amorpha fruticosa seedlings
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.
Amorpha fruticosasalt stressphysiological and biochemical characteristics
国家科技期刊平台
NSTL
万方数据
维普
