| 摘要: |
| 以杜鹃花园艺品种 ‘ 瑞紫 ’ Rhododendron simsii ‘Ruizi’ ‘ 紫孔雀 ’ R. simsii ‘Zikongque’ ‘ 白香玉 ’ R.
simsii ‘Baixiangyu’ 和 ‘ 盛春 1 号 ’ R. simsii ‘Shengchun1’ 作为实验材料，研究 IAA、IBA 和 NAA 3 种生长激
素及其不同浓度处理对其扦插生根的影响。结果表明：不同生长调节剂对 4 种杜鹃花的生根率影响差异显
著，其中 ‘ 紫孔雀 ’ 和 ‘ 白香玉 ’ 使用 IBA 效果最佳，‘ 瑞紫 ’ 和 ‘ 盛春 1 号 ’ 促根效果最佳的生长调节剂分
别是 NAA 和 IAA；激素种类与浓度交互作用显著影响生根指标，不同浓度和不同激素的交互作用对杜鹃花
生根率的影响达到极显著差异。根据研究结果，最终筛选了适合不同品种的最佳促根激素组合：‘ 瑞紫 ’ 最
佳的扦插生根激素为 NAA100 mg · L-1
，‘ 紫孔雀 ’ 最佳生根激素为 IBA100 mg · L-1
，‘ 盛春 1 号 ’ 最佳生根
激素为 IAA 50 mg · L-1
，‘ 白香玉 ’ 最佳的扦插生根激素为 IBA200 mg · L-1
。 |
| 关键词: 杜鹃花 生长调节剂 扦插 生根率 |
| DOI： |
| 投稿时间：2019-11-22修订日期：2019-12-27 |
| 基金项目:广州市财政一次性专项(穗财编[2019]105号),广州市创新平台建设计划专项(201805020006) |
|
| Effects of Growth Regulators on the Rooting of Cuttings of Rhododendron Cultivars |
| Sun Miaomiao,Wang Wei,Ni Jianzhong,Hu Xing,Chen Shuna,Zheng Yongxiao |
| (Academy of Forestry and Gardening of Guangzhou/ Municipal key Laboratory of Landscape Architecture,GuangZhou,510405) |
| Abstract: |
| In this study, taking the softwoods of Rhododendron simsii ‘Ruizi’, R. simsii ‘Zikongque’,
R. simsii ‘Baixiangyu’ and R. simsii ‘Shengchun No.1’ as materials to study different mass concentrations
of IAA, IBA,NAA and their interactions on the rooting of cuttings of different Rhododendron cultivars. The
results show that effects of different mass concentrations of growth regulators on the rooting percentage,
adventitious root number and the longest root length have very significant differences under the treatments. R.
simsii ‘Zikongque’ and R. simsii ‘Baixiangyu’ have the best effect with IBA.The best promoting-root-growth
effect of R. simsii ‘Ruizi’and R. simsii ‘Shengchun No.1’ is NAA and IAA. The interactions of different mass
concentrations and different growth regulators have very significant differences on the rooting percentage.
According to the results of the study, the best combination of growth regulator suitable for different cultivars
was screened.The best growth regulator and concentration of R. simsii ‘Ruizi’, R. simsii ‘Zikongque’, R.
simsii ‘Baixiangyu’ and R. simsii ‘Shengchun No.1’ is NAA 100 mg · L-1 , IBA100 mg · L-1 ,IAA 50 mg · L-1
and IBA200 mg · L-1. |
| Key words: Rhododendron growth regulator cutting rooting percentage |
