森林工程2024，Vol.40Issue(4)：49-57,9.DOI:10.7525/j.issn.1006-8023.2024.04.006
珍稀濒危植物领春木扦插繁殖技术
Cutting Propagation Techniques of Rareand Endangered Plant Euptelea pleiospermum
摘要
Abstract
In order to optimize the technical problems of cutting rooting of rare and endangered tree species Euptelea pleiosper-mum,using 1-year-old semi lignified branches of E.pleiospermum wood as cutting materials,an orthogonal experimental design was adopted to explore the effects of different substrates,exogenous hormones,concentrations,and treatment times on the rooting of E.pleiospermum wood cutting through the calculation of rooting rate,root effect index,and other indicators(Matrix type、hormone type,mass concentration,hormone treatment time were four factors,and each factor had four gradients).The membership function numerical method was used to comprehensively evaluate the rooting effect of 16 treatment combinations,providing technical reference for the expansion of E.pleiospermum wood.Among the four cutting substrate ratios(100％peat;V(peat):V(perlite)=5:2;V(peat):V(vermiculite)=5:2;V(peat):V(perlite):V(vermiculite)=5:2:2,V represents the volume ratio),peat:perlite(5:2)had the best rooting effect,with a rooting rate,average root length,longest root length,average root number,and average root diameter of 56.67％,6.74 cm,7.47 cm,5.73 stripes/ears,and 0.31 cm,respectively.The root effect index reached 1.74,which was much higher than the other three substrate ratios(P<0.05).The results of the orthogonal experiment showed that the rooting effect of cut-tings soaked with ABT-1 at a concentration of 1 g/L for 5 seconds was the best,with a rooting rate of 65.73％,an average root length of 7.38 cm,an average number of 7.59 stripes/ears,a maximum root length of 7.52 cm,an average root diameter of 0.35 cm,and a root effect index of 1.87.Comprehensive analysis showed that the optimal treatment combination for rooting effect was(peat to perlite volume ratio 5:2 as substrate,with the highest average membership function value in ABT-1 at a medium speed of 1.0 g/L for 5 sec-onds),and the lowest treatment combination was(peat to vermiculite volume ratio 5:2 as substrate,soaked in 0.8 g/L indole butyric acid(IBA)for 12 hours.关键词
领春木/扦插繁殖/外源激素/隶属函数/生根效果Key words
Euptelea pleiospermum/cutting propagation/exogenous hormone/subordinate function/rooting effect分类
农业科技引用本文复制引用
刘方虎,张宏生,田凌鸿..珍稀濒危植物领春木扦插繁殖技术[J].森林工程,2024,40(4):49-57,9.基金项目
甘肃省科技计划资助(22JR5RA767). （22JR5RA767）
