基质和生长调节剂对短序荚蒾嫩枝扦插的影响  

Effects of Substrate and Growth Regulator on Softwood Cutting of Viburnum brachybotryum

作　　者：章晓琴 李娜 徐慧 王建强 聂超仁 王彩云[2] ZHANG Xiaoqin;LI Na;XU Hui;WANG Jianqiang;NIE Chaoren;WANG Caiyun(Wuhan Institute of Landscape Architecture,Wuhan 430081;Key Laboratory for Biology of Horticultural Plants,Ministry of Education,Huazhong Agricultural University,Wuhan 430070)

机构地区：[1]武汉市园林科学研究院,武汉430081 [2]华中农业大学园艺植物生物学教育部重点实验室,武汉430070

出　　处：《中国农学通报》2023年第28期17-23,共7页Chinese Agricultural Science Bulletin

基　　金：武汉市园林和林业局项目“荚蒾属观赏植物的开发应用研究”(WHGF2020A03)。

摘　　要：为建立短序荚蒾的扦插繁殖技术体系,以5~8年生短序荚蒾实生苗当年生半木质化的枝条为实验材料,采用L_(9)(3^(4))正交实验设计,研究3种扦插基质、生长调节剂、处理浓度及处理时间对短序荚蒾嫩枝扦插的影响。结果显示,短序荚蒾扦插生根类型为混合生根型,即皮部和愈伤均可生根,在适宜的条件下,插穗能在15 d时生根,60 d后大量形成不定根,扦插后80 d可形成偏褐色的成熟根系。扦插基质对短序荚蒾插穗的生根率无显著影响,对不定根数量影响显著,对最长不定根长影响达到极显著水平;生长调节剂种类对最长不定根长影响显著,对生根率、不定根数量影响极显著;处理浓度对不定根数量和最长不定根长无显著影响,仅对生根率有极显著影响;处理时间仅对不定根数量有显著影响。采用隶属函数法综合分析发现,扦插基质为V(泥炭):V(珍珠岩)=1:1、生长调节剂为IAA、处理浓度为200 mg/L、处理时间2 h)虽综合排名第3位,但其生根率高达95.96%,且其不定根数量为14.67条,最长不定根长6.37 cm,扦插育苗质量也较高,为短序荚蒾嫩枝扦插的最佳处理组合。To establish the cutting propagation technology system of Viburnum brachybotryum,the effects of three cutting substrates,growth regulators,treatment concentrations and treatment time on the softwood cutting of V.brachybotryum were studied by L_(9)(3^(4))orthogonal design.The semi-lignified branches of the 5-8 years old V.brachybotryum seedlings were used as the experimental materials.The results showed that the cutting rooting type of V.brachybotryum was mixed rooting type,both bark and callus could take root.Under suitable external environmental conditions,the cutting could take root at the 15th day,and a large number of adventitious roots were formed after 60 days,and the mature roots with brown color could be formed after 80 days.Cutting substrate had no significant effect on the rooting rate of V.brachybotryum cuttings,but had significant effect on adventitious root number and extremely significant effect on the longest adventitious root length.The types of growth regulators had significant effect on the longest adventitious root length,and extremely significant effect on the rooting rate and adventitious root number.Treatment concentration had no significant effect on adventitious root number and the longest adventitious root length,but had very significant effect on the rooting rate.Treatment time only had significant effect on adventitious root number.Comprehensive analysis by membership function method showed that V(peat):V(perlite)=1:1 as the cutting substrate,and IAA as the growth regulator at 200 mg/L for 2 h ranked the third,but its rooting rate was as high as 95.96%,ranking the first,and the number of adventitious roots was 14.67,the longest adventitious root length was 6.37 cm,and the quality of cuttings was also high.Therefore,the treatment is the best combination for the cuttings of V.brachybotryum.

关 键 词：短序荚蒾 基质 生长调节剂 扦插 生根效果 

分 类 号：S273.1[农业科学—农业水土工程]