植物生长调节剂对海州常山硬枝扦插生根的影响  

Effect of Different Growth Regulators on Hardwood Cutting Rooting of Clerodendrum trichotomum

作　　者：刘军[1] 曾德静[1] 王铖[2] 尹丽娟[2] 

机构地区：[1]四川农业大学,雅安611130 [2]上海市园林科学研究所

出　　处：《东北林业大学学报》2012年第8期10-12,46,共4页Journal of Northeast Forestry University

基　　金：上海市科技兴农重点攻关项目(沪农科攻字2008第10-5号)

摘　　要：以海州常山1 a硬枝为试材,研究了不同种类和浓度的植物生长调节剂对海州常山硬枝扦插生根的影响。结果表明:2,4-D、IBA、NAA和ABT1均可以促进海州常山硬枝的生根,以200 mg·L-1的ABT1处理的最好,生根率为93.3%,其次是400 mg·L-1的NAA,生根率为92.0%。方差分析表明:不同生长调节剂种类对生根率的影响差异不显著,不同质量浓度之间差异显著;不同种类和浓度的生长调节剂对生根量的影响均达到极显著水平,对根长的影响均不显著。通过对生根过程的观察和生根指标的分析可知,上海地区海州常山硬枝在春季扦插时,要保证较高的生根质量(生根率、生根量和根长),插穗需要75 d左右的生长时间。An experiment was conducted to study the effects of different types and concentrations of plant growth regulators on rooting of one-year-old hardwood cuttings of Clerodendrum trichotomum. Results showed that 2,4-D, IBA, NAA and ABT1 all could promote the rooting of hardwood cuttings of C. trichotomum, but the rooting effects of 200 mg · L^（-1） ABT, and 400 mg· L^（-1） NAA were better than those of the others, and their rooting rates reached 93.3% and 92.0%, respectively. The variance analysis showed that there was no significant difference in rooting rate between different types of growth regulators, while a significant difference was observed between different concentrations. The effects of different types and concentrations of growth regulators on rooting volume both reached extremely significant levels, but there was no significant difference in root length. The observation of rooting process and the analysis of rooting indexes show that the growth of hardwood cuttings for about 75 days after cutting can guarantee the high rooting quality （ rooting rate, rooting volume, and root length） of hardwood cuttings of C. trichotomum in Shanghai in spring.

关 键 词：园林植物 海州常山 激素 扦插 生根率 

分 类 号：S723.132.1[农业科学—林木遗传育种]