摘要
以抗寒性较强的‘燕红’[Prunus persica(L.)‘Yanhong’]和抗寒性较弱的‘中华寿桃’[Prunus persica(L.)‘Zhonghuashoutao’]2个桃品种为试材,研究电阻抗(EIS)参数与抗寒性(电解质渗透法测定枝条冷冻半致死温度LT50)的关系。结果表明:电阻抗参数法估测的抗寒性同电解质渗透法测定抗寒性具有较高的一致性,‘中华寿桃’EIS(re)法相关性最高,相关系数达到0.99,‘燕红’相关性也达到0.98,表明EIS(re)法可用于测定桃树抗寒锻炼期间枝条抗寒性。未经冷冻处理的枝条的电阻抗参数与抗寒性也具有较高的一致性,其中胞外电阻率re相关性最高,‘燕红’和‘中华寿桃’都达到-0.92;同时通过比较各参数的通径分析测得t值得出re为估测桃树枝条抗寒性最佳的参数。
In the present study, ＇Yanhong＇[Prunus persica （L.） ＇Yanhong＇] and ＇Zhonghua- shoutao＇ EPrunus persica （L.） ＇Zhonghuashoutao＇], showing stronger and weaker cold re- sistance, respectively, were utilized to study the relationship between electrical impedance spectroscopy （EIS） parameters and frost hardiness （Semi lethal temperature LTso was meas- ured by the electrolyte leakage （EL））. The results showed that, the frost hardiness using EIS measurement was more consistent with EL measurement. The correlation of specific extracellu- lar resistance re was the highest for ＇Zhonghuashoutao＇, with the correlation coefficients reac- hing to 0.99, and to 0. 980 for ＇Yanhong＇, indicating that EIS （re） could be used to measure the frost hardiness in peach stem during cold hardening. Non-frost-exposed parameters and frost hardiness also had higher correlation, and the parameter ro is the highest for ＇Yanhong＇ and ＇Zhonghuashoutao＇ with the correlation coefficients reached to --0.92, respectively; while by means of path coefficient analysis, the re was the best parameter assessing frost hardiness in Prunus persica shoots.
出处
《河北农业大学学报》
CAS
CSCD
北大核心
2014年第2期45-48,57,共5页
Journal of Hebei Agricultural University
基金
现代农业产业技术体系建设专项资金资助(CARS-31-3-02)
关键词
桃
电阻抗图谱
抗寒性
抗寒锻炼
Prunus persica （L.） Batsch electrical impedance spectroscopy （EIS） frost hard-ness cold hardening
