Effects of heavy metals and saline-alkali on seedlings growth, physiological-biochemical of Oryehophragmus violaeeus

Abstract

Abstract: The aim was to study on effects of heavy metals and saline-alkali on seedlings growth, physiological-biochemical of Oryehophragmus violaeeus. The results showed that relative electrolyte leakage, the content of soluble sugar and the content of Pro all increased with increased heavy metals and saline-alkali conditions, the total biomass decreased with increased heavy metals and saline-alkali conditions, but the content of MDA initially increased and then decreased. The activities of superoxide dismutase, peroxidase increased with increased heavy metals and saline-alkali conditions, and evidently higher than the control. The effect of heavy metals and saline-alkali stress on photosynthetic pigment content, in the leaf was assessed. With an increase in heavy metals and saline-alkali concentration, the chlorophyll and carotenoid contents decreased gradually, but the carotenoid contents decreased morn. The seedlings of O. violaeeus is with resistance against light combined stresses of salt-alkali and Pb (500 mg/L), and the stress patience of vane is greater than the root.

CLC Number:

Q945

ZHANG Xiao-ai, LI Ming-yang, WANG Zhi-hui, TANG Hao-ruo, ZHANG Xin-quan, ZUO Jing. Effects of heavy metals and saline-alkali on seedlings growth, physiological-biochemical of Oryehophragmus violaeeus[J]. Acta Prataculturae Sinica, 2013, 22(2): 187-194.

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