Abstract:

The electrical impedance spectroscopy parameters and relative electrolyte leakage of Ulmus pumila var. pendula and Ligustrum lucidum living in the same saline were measured, and the validity of electrical impedance spectroscopy parameters and relative electrolyte leakage were analyzed. The results showed that in saline, with increasing stress time, the electrical impedance spectroscopy parameters and relative electrolyte leakage of Ulmus pumila var. pendula and Ligustrum lucidum were changed regularly. The relative electrolyte leakage of Ulmus pumila var. pendula and Ligustrum lucidum leaves increased firstly and then decreased, the relative electrolyte leakage of stems decreased firstly and then increased. Extracellular resistance of leaves increased firstly and then decreased. The extracellular resistance and relaxation time of stems increased gradually or increased firstly and then decreased with increasing stress time. The correlation analysis indicated that the extent of ornamental trees salt-stressed could be reflected effectively through electrical impedance spectroscopy parameter. The results gave the preliminary parameters of electrical impedance for diagnosing level of saline-resistance in Ulmus pumila var. pendula and Ligustrum lucidum.