Effects of Mixed Salt Stress on Physiological Characteristics of Akebia trifoliata(Thunb.)Koidz.
[Objective]The aim was to explore the effects of mixed salt stress on the growth of Akebia trifoliata.[Method]Different concentrations of NaCl and Na2SO4 mixed salt solution were used to irrigate the seedlings of A.trifoliata,and the physiological indexes such as free water/bound water content,soluble sugar and proline content,conductivity,MDA content and POD activity were measured.Compared with the control group of distilled water,the effects of mixed salt stress on the physiological indexes of A.trifoliata were obtained.[Result]When the mixed salt stress increased,the free water content showed a decreasing trend as a whole,and the bound water content showed a trend of decreasing first and then increasing.The soluble sugar content of A.trifoliata showed an increasing trend,and the proline content showed a trend of decreasing first and then increasing.The higher the salt concentration,the higher the relative conductivity.The MDA content of A.trifoliata showed a downward trend,and the POD activity showed a trend of decreasing first and then increasing.[Conclusion]Under low salt stress,A.trifoliata could improve tolerance by increasing osmotic adjustment substances,while high salt stress had an effect on some physiological indexes.A.trifoliate has a certain tolerance to mixed salt stress.
Akebia trifoliataMixed salt stressPhysiological characteristics
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