电解质渗透法和电阻抗参数法测定桃树抗寒性关系

Relationship Between Determination of Cold Resistance of Peach Tree by Electrolyte Permeation Method and Electrical Impedance Parameter Method

以抗寒性不同的6个桃树品种为试材,研究了电阻抗图谱(EIS)与电解质渗透法(EL)2种方法测定冷冻枝条半致死温度的相关关系,以期找到评价桃树抗寒性的简便方法,为新品种的早期鉴定以及适地栽培提供参考依据。结果表明:2种方法测定6个桃品种的抗寒性与生产上抗寒性强弱表现一致;电阻抗参数法可以在抗寒锻炼后期和脱锻炼初期进行抗寒性的测定;EL法与EIS 4个参数法测定抗寒性均呈极显著正相关,其中τ法相关系数最高,为0.904,τ法通径系数为-1.389,线性方程为y=1.0126x-2.0761,R^(2)为0.8178。

Six peach tree varieties with different cold resistance were used as test materials, the correlation between electrical impedance spectroscopy(EIS) and electrolyte permeation(EL) in the determination of the half-lethal temperature of frozen branches was studied, in order to find an easy way to evaluate peach hardiness, and also provide reference for the early identification and field cultivation of new varieties.The results showed that the cold resistance of 6 peach cultivars measured by two methods was consistent with the cold resistance in production.The electrical impedance parameter method could be used to measure the cold resistance in the later stage of cold-resistant exercise and the early stage of de-exertion.The EL method and the EIS four-parameter method both showed extremely significant positive correlations, among which the τ method had the highest correlation coefficient of 0.904.The path coefficient of the τ method was-1.389,the linear equation was y=1.012 6x-2.076 1,R^(2) was 0.817 8.