生态学杂志2025，Vol.44Issue(4)：1202-1211,10.DOI:10.13292/j.1000-4890.202504.045
植物生长调节剂促进观赏凤梨分蘖有效成分筛选及机制
Screening of the effective components of the plant growth regulators promoting tillering in ornamental bro-meliads and the underlying mechanism
摘要
Abstract
To screen the effective reagents for promoting the tillering of Ornamental bromeliads,different concentra-tions of ethephon,paclobutrazol,and 6-BA were used,with water as the control.The tillering-promoting effects were evaluated,and the underlying mechanism was explored.The results showed that 100 ppm ethephon was the most suitable reagent for promoting the tillering of ornamental bromeliads'flat-headed red'.Under the concentra-tion of 100 ppm ethephon,the tillering coefficient could reach 10 or above when the fertilization was stopped 30 days before the treatment,and pH of ethephon solution was adjusted to 6 with potassium carbonate.Compared with the control,ethephon treatment increased leaf number and plant height,while had limited effects on leaf length,leaf width,and crown width.Moreover,ethephon treatment promoted C/N ratio in roots,stems and leaves,the chlorophyll content in the later stage,as well as the accumulation of total nitrogen,phosphorus and potassium in plants.The contents of total nitrogen,phosphorus and potassium were positively related to tiller number.These re-sults suggested that the ethephon treatment might promote tillering through increasing C/N ratio and the contents of total nitrogen,phosphorus and potassium in ornamental bromeliads.This work provided technical support for the breeding of ornamental bromeliad seedlings and the possibility of localizing ornamental bromeliad seedlings.关键词
观赏凤梨/分蘖/乙烯/C/N比/叶绿素/氮/磷/钾Key words
Ornamental bromeliad/tillering/ethylene/C/N ratio/chlorophyll/nitrogen/phosphorus/potassium引用本文复制引用
王强,马晓云,李钰,冯梦楠,曹冬梅..植物生长调节剂促进观赏凤梨分蘖有效成分筛选及机制[J].生态学杂志,2025,44(4):1202-1211,10.基金项目
山西省"特""优"农业高质量发展科技支撑工程项目(TYGC24-58)、山西省科技合作交流专项(202204041101050)和山西省农作物种质资源保护资助项目(sxzyk202401-8)资助. （TYGC24-58）
