中国林学(英文版)2001，Vol.3Issue(1)：1-6,6.
毛白杨抗冻性低温诱导过程中糖的效应
Effect of Sugar on the Process of Cold-Acclimation-Induced Freezing Tolerance of Populus tomentosa
林善枝 1张志毅1
作者信息
- 1. 北京林业大学毛白杨研究所,北京,100083
- 折叠
摘要
Abstract
Populus tomentosa seedlings for cold-acclimating were pretreated with or without 20% saccharose.Changes in the concentrations of total soluble sugar, the survival rates, and freezing tolerance of seedlings during cold acclimation were investigated. The results showed that cold acclimation increased the concentrations of total soluble sugar, the survival rates and freezing tolerance. Cold acclimation, combined with the saccharose-pretreat ment, enhanced the above-mentioned effect of cold acclimation, and obviously increased the concentrations of total soluble sugar, the survival rates and freezing tolerance of seedlings. Further analysis found that the concentrations of total soluble sugar in branches increased greater than that in leaves during both cold acclimation with or without the pretreatment of saccharose. Moreover, an increase of the concentrations of total soluble sugar in branches and leaves was closely related to the freezing tolerance of seedlings. The results indicate the accumulation of soluble sugar in seedlings induced by cold acclimation may be involved in the induction of freezing tolerance. 关键词
毛白杨/低温锻炼/抗冻性/存活率/可溶性糖Key words
Populus tomentosa/cold acclimation/freezing tolerance/survival rates/soluble sugar分类
农业科技引用本文复制引用
林善枝,张志毅..毛白杨抗冻性低温诱导过程中糖的效应[J].中国林学(英文版),2001,3(1):1-6,6.
