丽江云杉扦插促根剂配方筛选和插条效应  

Screening of cutting root-inducing agent and cutting effect of Picea likiangensis

作　　者：安三平 王丽芳 王美琴 石红 张宋智 马建伟 王军辉[2] 

机构地区：[1]甘肃小陇山林业科学研究所,甘肃天水741022 [2]中国林业科学研究院林业研究所国家林业局林木培育重点实验室

出　　处：《林业科技开发》2011年第3期88-91,共4页China Forestry Science and Technology

基　　金：农业科技成果转化资金项目"欧洲云杉无性扩繁技术体系应用与示范(编号:2010GB24320611);甘肃省科技支撑计划项目"云杉属种质资源收集与优良适生种的选择"(编号:090NKCE061)

摘　　要：以丽江云杉5年生母树为采穗母株,研究了丽江云杉扦插促根剂配方的最佳组合和不同插穗条件对生根的响应,结果表明:扦插后10天愈伤组织开始形成,40天时根尖开始出现,50～70天是生根的高峰期和根系发育期。在进行丽江云杉插穗处理时,应选择300 mg/L IBA处理2 h,生根率可达到90%以上,插穗类型对生根影响不显著,顶轮、一级和二级侧枝做插穗都能获得较高质量的扦插苗,8～12 cm长的插穗是适宜的插穗长度。硬枝和嫩枝扦插生根效应明显,硬枝的扦插成活率高,成活苗根系发达、健壮。The researchers chose the cutting from 5-year old ortet of Picea likiangensis to investigate the optimized combination of cutting root-inducing agent and the effect of different cutting conditions on rooting.The results showed that the callus began to form after cutting for 10 days,and after 40 days root tip began to appear,and the peak period of rooting and root system development was after cutting for 50～70 days.The treatment of immersing P.likiangensis cutting in 300 mg/L IBA for 2 h would get over 90% rooting rate,and there was no significant effect of cutting type on rooting.The cutting from top branch,first order side branch and second order side branch would gain high quality cutting plant,8～12 cm long cutting would be the suitable cutting.Both hardwood cuttings and softwood cuttings had obvious rooting effect,and hardwood cutting would get high survival rate and survival steckling would be prosperous and strong.

关 键 词：丽江云杉 促根剂 插穗条件 生根进程 生根率 

分 类 号：S763.711.8[农业科学—森林保护学]