不同生长调节剂和浓度对‘火焰’卫矛扦插生根的影响
2023-05-21李金霞储博彦张建业王储一
李金霞 储博彦 张建业 王储一



摘 要:为促进‘火焰卫矛扦插生根,以‘火焰卫矛幼龄母树上当年生半木质化枝条作为试材,选用萘乙酸(NAA)、吲哚丁酸(IBA)、萘乙酸(NAA) ∶ 吲哚丁酸(IBA)1 ∶ 1、ABT1 4种植物生长调节剂,分别设置100、200、300、500、800 mg·L-1共5个质量浓度梯度,研究了不同生长调节剂和浓度对‘火焰卫矛扦插生根效果的影响。结果表明:在浓度500 mg·L-1IBA ∶ NAA(1 ∶ 1)溶液中速蘸10 s,‘火焰卫矛平均生根率达97.2%,最长根长9.17 cm,平均根长5.62 cm,生根指数137.03,生根处理效果最好;其次是800 mg·L-1ABT1处理, 生根率92.89%,生根数25.27,最长根长8.43 cm,平均根长4.94 cm,生根指数118.22,生根处理效果较好。因此,500 mg·L-1 IBA ∶ NAA(1 ∶ 1)和 800 mg·L-1 ABT1是‘火焰卫矛嫩枝扦插的最佳植物生长调节剂。
关键词:生长调节剂;浓度;‘火焰卫矛;扦插;生根率
中图分类号:S687.9 文献标志码:A DOI 编码:10.3969/j.issn.1006-6500.2023.05.002
Abstract: In order to promote the cutting and rooting of Euonymus alatus cv.'Compacta', the half-lignified branches of the young mother tree of Euonymus alatus cv.'Compacta' were taken as test materials, naphthoacetic acid (NAA), indole butyric acid (IBA), naphthoacetic acid (NAA) ∶ indole butyric acid (IBA) 1 ∶ 1,ABT1 four plant growth regulators were set up with five mass concentration gradients of 100, 200, 300, 500 and 800 mg·L-1, respectively, to study the effects of different growth regulators and concentrations on the rooting effect of Euonymus alatus cv.'Compacta'. The results showed that: at the concentration of 500 mg·L-1IBA ∶ NAA(1 ∶ 1) when the solution was dipped in medium speed for 10 s, the average rooting rate of Euonymus alatus cv.'Compacta' reached 97.2%, the longest root length was 9.17 cm, the average root length was 5.62 cm, the rooting index was 137.03, and the rooting effect was the best. Followed by 800 mg·L-1 ABT1 treatment, the rooting rate was 92.89%, and the number of rooting was 25.27,the longest root length was 8.43 cm, the average root length was 4.94 cm, and the rooting index was 118.22, the rooting treatment effect was better.The concentration of 500 mg·L-1 IBA∶NAA(1∶1)和 800 mg·L-1 ABT1 have the best effects on the rooting ofcuttings of Euonymus alatus cv.'Compacta'.
Key words: growth regulator; concentration; Euonymus alatus cv.'Compacta'; cutting ; rooting rate
‘火焰衛矛(Euonymus alatus cv.'Compacta')系卫矛科卫矛属落叶灌木,是卫矛在长期选育过程中获得的栽培品种,从欧洲引进中国[1],其树枝密集,树形丰满,枝翅奇特,春、夏季叶片深绿色,秋季叶片鲜红似火焰,孤植、列植、群植于景区、庭院、湖旁、草坪中,都具有较高的观赏价值[1-2]。作为新兴的一种秋色叶树种,近年来‘火焰卫矛在园林绿化中已经展露头角,受到广泛关注[3]。
在林木引种工作中,为保持良种特性,通常采用无性繁殖方式来扩繁,扦插繁殖在苗圃生产中简单易行,缩短育苗时间,节约育苗成本,是发展良种生产的一种重要手段。为了快速增加‘火焰卫矛的市场存圃量,使其大量应用到城市绿化,扦插繁殖是火焰卫矛的最主要繁育方式[2-3],刘艳霞[1]认为插条最好用1 000 mg·L-1的生根粉进行速蘸,能加快生根过程及提高生根率;……
