西北植物学报2024，Vol.44Issue(7)：1141-1152,12.DOI:10.7606/j.issn.1000-4025.20230739
黑果腺肋花楸扦插生根特性及不定根发生模式研究
Study on rooting characteristics and occurrence model of adventitious roots in cuttage of Aronia melanocarpa
摘要
Abstract
[Objective]The aim of the study is to investigate the origin and development of the adventitious roots in cuttage of Aronia melanocarpa as well as to understand its mechanism.[Methods]Taking the semi-lignified cuttings of'Fukangyuan No.1'as materials,the changes in internal structure and external morphology of the cuttings during the formation of adventitious roots were observed by hydroponic cutting technology and paraffin section method.[Results]The results showed that the rooting period of IBA-treated cuttings was 30-40 d under hydroponic conditions.During the cutting process,the adventitious roots were appeared at the lenticel at 10-15 d and at at the cutting incision 15-20 d,and the rooting speed,number,and root length were better than the control.The number of adventitious roots in the cut-tings was the largest and the rooting was fast.Exogenous induction significantly improved rooting rate and quality.There was no latent root primordium in the cuttings before cutting,which was formed after cut-ting.The adventitious roots were formed into callus rooting type and internal meristem rooting type.The adventitious roots produced in the bark were originated from vascular cambium,phloem parenchyma cells,or cortex,while the adventitious roots produced by the callus were specialized by the parenchymal cells.Leaf gaps or branch gaps were the main areas for the formation of adventitious root primordia and the for-mation of callus.[Conclusion]The rooting of cuttings belongs to the multi-site mode and the induced roo-ting type.关键词
黑果腺肋花楸/扦插/不定根发生/叶隙/枝隙Key words
Aronia melanocarpa/cutting/adventitious root formation/leaf gap/branch gap分类
农业科技引用本文复制引用
董立格,曲良谱,张成霞,韦庆翠,李成忠..黑果腺肋花楸扦插生根特性及不定根发生模式研究[J].西北植物学报,2024,44(7):1141-1152,12.基金项目
泰州市科技支撑计划(农业)项目(TN202007) （农业）
江苏省林业科技示范与推广项目"江苏省林源药用植物资源发掘与创新利用关键技术长期科研基地"(LYKJ[2020]29) （LYKJ[2020]29）
江苏农牧科技职业学院校级科研项目"黑果腺肋花楸生物学特性及其繁殖技术研究"(NSF201812) （NSF201812）
