内蒙古农业大学学报（自然科学版）2026，Vol.47Issue(4)：43-54,12.DOI:10.16853/j.cnki.1009-3575.2026.04.006
四合木扦插繁殖技术优化研究
Optimization of Cutting Propagation Techniques for Tetraena mongolica Maxim.
摘要
Abstract
Tetraena mongolica Maxim.is a nationally protected,rare,and endangered plant species in China,playing an irreplace-able role in maintaining local ecological stability and biodiversity.To address the challenges in its germplasm propagation and im-prove the efficiency of asexual reproduction,this study investigated key factors affecting the cutting propagation,including donor plant type,cutting position,the interval between cutting and planting,and propagation method.The effects of different treatments on rooting performance were evaluated by measuring the rooting rate,callus induction rate,leaf retention rate,mean root number,mean root length,mean root diameter,root fresh weight,and root quality index,aiming to establish an optimized protocol for cutting propagation that supports germplasm conservation and large-scale cultivation.The results showed that,cuttings from medium-sized donor plants had higher rooting rates,while those from large donor plants developed better-quality root systems,allowing selection according to propagation objectives.Cuttings from upper branches produced significantly more roots than those from the basal parts,although root length and diameter were not significantly different;thus,upper branches are recommended for cutting collection.Nei-ther the duration of cutting storage after detachment from the mother plant nor the propagation method had a significant effect on the rooting performance of T.mongolica.Under adequate moisture retention,cuttings inserted within 24 h after detachment exhibited comparable rooting outcomes.Although no significant differences in rooting indicators were observed between the field cutting and nursery-bag cutting,the latter reduced root damage during transplanting and improved post-transplant survival.关键词
四合木/扦插繁殖/采穗母株/插穗部位/育苗袋Key words
Tetraena mongolica Maxim./Cutting propagation/Donor plant/Cutting position/Seedling bag分类
农业科技引用本文复制引用
刘斯颖,冯天雨,徐军,张佳艺,李国婧,王瑞刚..四合木扦插繁殖技术优化研究[J].内蒙古农业大学学报（自然科学版）,2026,47(4):43-54,12.基金项目
杭锦旗科技计划项目(2024HJGJ03) （2024HJGJ03）
内蒙古科技创新团队项目(NMGIRT2222,BR22-13-05) （NMGIRT2222,BR22-13-05）
呼和浩特市重大科技专项项目(2022-社-重-1-3) （2022-社-重-1-3）
