摘要
南天竹是叶、果、株型皆具极高观赏价值的常绿灌木,在城市园林绿化和室内绿化装饰中被广泛应用。为了保持南天竹的优良特性,丰富国内南天竹优良品种资源,促进南天竹产业化发展,研究了南天竹的扦插技术和生根类型,分别选用美国南天竹优良品种‘白果’南天竹2~3年生硬枝插穗和嫩枝插穗作为试验材料,就插穗的不同剪口位置、不同浓度和时间的ABT3号生根粉处理、不同基质对其扦插生根类型的影响情况进行了试验研究。结果表明:‘白果’南天竹枝插穗生根为腋(侧)芽基部分生组织生根类型;‘白果’南天竹多年生硬枝及当年生嫩枝均可用于扦插育苗,就扦插生根率而言,嫩枝扦插高于硬枝扦插;插穗以有顶芽、下剪口带踵或位于芽(叶鞘)基部的为好,插穗处理效果以1000mg/kg的ABT3号生根剂蘸3~5s的为好。
Nandina domestica is a specie of evergreen shrub, its leaves, fruits and plant types have high ornamental value, and has been widely used in urban landscape virescence and indoor virescence. We studied cutting techniques and cuttings rooting type in N. domestica, in order to maintain excellent characteristics, to enrich fine variety resources and to promote industrialization development. By using hard branch cutting at 2 or 3 years old and tender shoot cutting in American N. domestica ‘Alba’ as test materials, we studied effects of different cut position, ABT 3 rooting powder treatments at different concentrations for different duration, and different substrates on cutting rooting type. The results showed that it was the rooting type of axillary (lateral) bud base meristems;both hard branches and tender shoots could be taken as cuttings, and rooting rate of tender shoot was higher than that of hard branch;branches with terminal bud, and with heel at the bottom of cut position or at the base of bud (leaf sheath) were suitable for cutting;soaking cuttings in 1 000 mg/kg ABT 3 rooting powder solution for 3-5 seconds had better rooting effect.
作者
任雪玲
REN Xueling(Luoyang Virescence Management Center, Luoyang 471000, Henan, China)
出处
《经济林研究》
北大核心
2019年第3期188-192,共5页
Non-wood Forest Research
基金
国家林业局948项目“美国南天竹优良品种及规模化快繁技术引进”（2014-4-70）
关键词
'白果’南天竹
生根类型
插穗
带踵
生根剂
Nandina domestica ‘Alba’
rooting type
cuttings
with heel
rooting reagent
