摘要
本文对西北林学院杜仲优树汇集圃内１０个优树无性系的枝条进行了不同低温处理，采用电导法测定了电解质渗出率，探讨了１０个优树无性之间的抗寒性差异，对其抗寒性强弱进行综合评判后依次排序为：略４５＞略１１＞略１６＞湘１１＞略４９＞略１＞略４３＞略４１＞黔８＞灌３。并初步测出１０个杜仲优树无性的半致死温度约在－２２～２４℃之间。
The electrolyte permeability of branches of ten selected eucommia clones of plus trees were measured by electro-conductivity guage under different low temperture treatments. The differences of cold resistance among the ten clones were analysed and the cold resistance of these clones was ranked as Lue45, Lue11, Lue16, Xiang11, Lue49, Luel, Lue43, Lue41, Qian 8 and Guan 3 through comperhensive evaluation. It was estimated that the half lethal temperture for the ten clones was at about-22～-24℃.
出处
《西北林学院学报》
CSCD
1995年第A01期131-136,共6页
Journal of Northwest Forestry University
关键词
杜仲
电导法
综合评判
抗冻性
无性系
eucommia
cold resistance
electro-conductivity method
comprehensive evaluation
