文献类型：期刊文献

中文题名：IAA和NAA对降香黄檀扦插繁殖的影响

英文题名：Influence of IAA and NAA on Cutting Propagation of Dalbergia odorifera

作者：徐珊珊[1] 刘小金[1] 徐大平[1] 洪舟[1] 郭俊誉[1] 杨曾奖[1]

第一作者：徐珊珊

机构：[1]中国林业科学研究院热带林业研究所,广东广州510520

年份：2021

卷号：34

期号：5

起止页码：168-176

中文期刊名：林业科学研究

外文期刊名：Forest Research

收录：CSTPCD;;Scopus;北大核心:【北大核心2020】；CSCD:【CSCD2021_2022】；

基金：“十三五”国家重点研发计划课题(2016YFD0600601);广东省林业科技创新项目(2020KJCX007)。

语种：中文

中文关键词：降香黄檀;扦插繁殖;生长调节剂;生根率;根系与新梢发育

外文关键词：Dalbergia odorifera;cutting propagation;plant growth regulator;rooting percentage;roots and shoots development

分类号：S722.8

摘要：[目的]开展降香黄檀扦插繁殖试验,探究不同浓度IAA和NAA对降香黄檀根系和新梢发育的影响,为降香黄檀优良单株材料的快速繁育和栽培提供理论和技术支撑。[方法]以2年生降香黄檀实生苗为采穗母株,依据IAA浓度、NAA浓度及浸泡时间设计正交试验;调查扦插80 d后不同处理间的生根率、根系发育和新梢发育指标,并运用隶属函数值法和主成分分析法对其繁殖效果进行综合评价。[结果]IAA浓度、NAA浓度、浸泡时间、IAA浓度与NAA浓度的交互效应以及IAA浓度与浸泡时间的交互效应对生根率的影响均差异极显著(P<0.01),对总根长、生根数、根系表面积和体积的影响差异显著(P<0.05)或极显著(P<0.01)。在一定范围内,插穗生根率随IAA浓度的升高逐渐增加,随NAA浓度的升高逐渐降低。采用主成分和隶属函数值综合评价扦插繁殖效果,16个处理中扦插繁殖效果最好的前25%的处理依次为:处理12、16、5、11,生根率分别为96.10%、97.66%、96.10%、96.88%。[结论]综合考虑生根率和插穗生长发育状况,建议在生产实践中采用500 mg·L^(-1)IAA+750 mg·L^(-1)NAA+浸泡1 min、750 mg·L^(-1)IAA+750 mg·L^(-1)NAA+浸泡10 s、250 mg·L^(-1)IAA+浸泡1 min和500 mg·L^(-1)IAA+500 mg·L^(-1)NAA+浸泡10 s的处理组合开展扦插繁殖。
[Objective]To identify the influence of IAA and NAA on the rooting and shooting ability of Dalbergia odorifera,and provide theoretical and technical support for the rapid propagation and cultivation of D.odorifera.[Method]Semi-lignified branches from 2-year-old D.odorifera seedlings were collected as the propagation materials.An orthogonal experiment was designed according to the concentrations of IAA and NAA and the soaking time.The effects of 16 treatments on rooting and shooting parameters of D.odorifera were investigated 80 days after cutting,and the subordinate function values method and principal component analysis were applied to comprehensively evaluate the rooting effects.[Result]The concentrations of IAA and NAA,the soaking time,the interaction between IAA and NAA concentration,and the interactions between IAA concentration and soaking time showed great impacts on rooting percentage,and statistical differences were also observed in terms of length of roots,amount of roots,surface and volume of root system.Under certain concentration range,the rooting percentage increased as the concentration of IAA increased,while decreased as the concentration of NAA increased.The principal component analysis and subordinate function values were used to comprehensively evaluated the cutting propagation performance.It is showed that the corresponding rooting percentages of the top 4 treatments were 96.10%,97.66%,96.10%and 96.88%,respectively.[Conclusion]Considering the rooting percentage,root and shoot development synthetically,it is suggested to apply 500 mg·L^(-1) IAA+750 mg·L^(-1) NAA+1-minute soaking or 750 mg·L^(-1) IAA+750 mg·L^(-1) NAA+10-second soaking or 250 mg·L^(-1) IAA+1-minute soaking or 500 mg·L^(-1) IAA+500 mg·L^(-1) NAA+10-second soaking in production practice to carry out cutting propagation of D.odorifera.