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Position: Home > Articles > Application of Electrical Impedance Analysis to Assessment of Freezing Injury in Chicory Roots Transactions of the Chinese Society of Agricultural Engineering 2002,18 (5) 23-27

电阻抗分析在菊苣根冻害检测中的应用研究(英文)

作  者:
陈发河;吴光斌;Mauice DeProft
单  位:
集美大学生物工程学院;鲁汶大学应用植物科学系
关键词:
电阻抗;钾离子渗漏;贮藏;冻害;菊苣根
摘  要:
以菊苣 (Cichorium intybus L var f oliosum cv.) 根为试材 ,分析了低温下电阻抗和钾离子渗漏速率的变化及其与细胞膜透性变化的定量关系。结果表明 :随着低温贮藏时间的延长和冻害的发展 ,菊苣根细胞膜透性增大 ,钾离子渗漏速率上升 ,组织的电阻抗值下降。3种温度下 (0℃ ,-1℃ ,-3℃ )贮藏的菊苣根其电阻抗值的变化均与钾离子渗漏速率呈显著的负相关关系。电阻抗对频率作图显示 ,在低频率范围 (2 0~ 10 0 H z)可得到最大而且较稳定的电阻抗值。因此 ,电阻抗分析方法可以用来检测和评价植物的冻害
译  名:
Application of Electrical Impedance Analysis to Assessment of Freezing Injury in Chicory Roots
作  者:
Chen Fahe 1, Wu Guangbin 1, Mauice De Proft 2 (1. College of Bio Engineering, Jimei University, Xiamen 361021, China; 2. Department of Applied Plant Science, Katholieke Universiteit Leuven, Leuven 3000, Belgium)
关键词:
electrical impedance; potassium ion leakage; storage; freezing injury; chicory root
摘  要:
Chicory (Cichorium intybus L var foliosum cv.) root was used to investigate the change in electrical impedance and potassium ion leakage during cold storage, and some quantitative relations between the electrical impedance and cell membrane permeability. It is showed that the cell membrane permeability, and the rate of potassium ion leakage increase, while the electrical impedance decreases with the development of freezing injury in chicory root. The change in electrical impedance in chicory roots stored at 0℃, -1℃, -3℃ was remarkable negatively correlated with the potassium ion leakage rate. At low frequency there was relatively little change and the highest value in impedance (20~100 Hz). Therefore, it is feasible that the electrical impedance analysis can be used to estimate the freezing injury of plant.

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