森林工程2025，Vol.41Issue(6)：1174-1181,8.DOI:10.7525/j.issn.1006-8023.2025.06.008
树体管理对落叶松种子园母树生理特性的影响
The Influence of Tree Management on the Physiological Characteristics of Mother Trees in Larch Seed Orchard
摘要
Abstract
Larch is an important plantation tree species in northern China.In order to reveal the physiological effects of tree management on the mother tree of larch,the mother tree of the second generation seed orchard of larch was used as the research object in this study.The physiological indexes such as endogenous hormones,nutrients,oxidase,MDA and free proline in the fruiting branches of the mother tree of larch were determined and analyzed by means of trunk trun-cation,pulling branches and trunk truncation+pulling branches.The results showed that the contents of IAA,GA3 and ZT were increased,while the content of ABA was decreased.Especially for the treatment combining trunk truncation+pulling branches(TT+PB),the contents of IAA,GA3 and ZT in TT+PB were 107.80%,108.61%and 107.29%of CK,respectively.In terms of endogenous hormone ratio,tree management increased the ratio of IAA/ABA,GA3/ABA,ZT/ABA,GA3/IAA,ZT/IAA and ZT/GA3.Tree management increased the contents of soluble protein,starch and soluble sugar in the fruiting branches of larch mother tree,especially trunk truncation+pulling branches(TT+PB),whose contents of soluble protein,starch and soluble sugar were 103.09%,115.99%and 104.40%of CK.The activity of SOD and POD was improved by tree management,and the resistance of larch mother tree was improved.In summary,tree management technology provides sufficient material substrate for improving seed yield and quality of larch mother tree.This study provided theoretical support for high and stable yield of larch seed orchard.关键词
落叶松/拉枝/截干/激素Key words
Larch/pulling branches/trunk truncation/hormone分类
农业科技引用本文复制引用
卜鹏图,冯健,杨圆圆,孙丽娟,李光..树体管理对落叶松种子园母树生理特性的影响[J].森林工程,2025,41(6):1174-1181,8.基金项目
国家重点研发计划(2022YFD220030204) （2022YFD220030204）
辽宁省农业科学院学科建设(2025XKJS8563). （2025XKJS8563）
