Effects of the Heavy Metal Cadmium on the Growth and Physiological Characteristics of Mesembryanthemum Cordifolium L.F.
GAO Jiali
WEI Shenghua
XIANG Wenxi
ZHANG Yinghong
YANG Tao
JIA Qing
AN Jiangyong
Abstract：In order to determine the effect characteristics of cadmium stress on the growth and physiological the Mesembryanthemum cordifolium L.F.,the growth indexes of different cadmium content solutions(0,5,10,15 mg/kg)were used to determine the stem length,stem thickness and branch numbers of the heart leaf medium flowers.The growth indexes such as stem length,stem diameter,branch number and yield were measured respectively.The changes of superoxide dismutase(SOD),peroxidase(POD),catalase(CAT)and malondialdehyde(MDA)content were measured,and their physiological responses to heavy metal cadmium stress were analyzed.The results showed that with the increase of cadmium content,some external growth indexes of Mesembryanthemum cordifolium L.F.,such as plant height,stem thickness,and numbers of branches,were significantly different from the control to different degrees.The physiological indexes of Mesembryanthemum cordifolium L.F.were significantly different with the increase of cadmium content,and MDA and CAT increased first and then decreased with the increase of cadmium content.On the contrary,POD showed a trend of decreasing first and then increasing,and the POD after treatment was lower than that of the control group,indicating that Mesembryanthemum cordifolium L.F.was not a Cd-tolerant plant.At the same time,the chlorophyll content and nitrogen content of Mesembryanthemum cordifolium L.F.decreased significantly with the increase of content.This study can provide basic data for the cultivation,resource conservation and development of use of Mesembryanthemum cordifolium L.F.in the context of heavy metals.
Keywords：Mesembryanthemum cordifolium L.F.cadmiumheavy metal stressgrowth indicatorsphysiological indicators
Publication Date：2024-12-20
Online Publishing Date：2025-08-15(First online date of this platform, not the publication date of the document)
Pages：5( 582-586 )