3种白蜡嫩枝扦插繁殖试验研究

Experimental Study on Softwood Cutting Propagation of Three Kinds of Fraxinus chinensis

[目的]筛选适合白蜡嫩枝扦插繁殖的最优条件。[方法]以‘京绿’绒毛白蜡(Franxinus velutina‘Jinglü’)、‘雷舞’窄叶白蜡(F.angustifolia‘Raywood’)和‘京黄’洋白蜡(F.platyphylla‘Jinghuang’)3个品种的当年生枝条为试验材料,采用正交试验设计,研究树种、激素种类、处理浓度和浸泡时间4个因素对插穗生根的影响。[结果]树种是影响白蜡插穗生根率、生根量、根长和总根长的主导因子,白蜡嫩枝扦插的最佳组合为A_1B_3C_3D_3,即‘京绿’绒毛白蜡+ABT_1+200 mg/L+浸泡60 min。[结论]该研究可为白蜡的快速繁殖提供科学依据。

[ Objective ] To select the optimum conditions for softwood cutting propagation of Fraxinus chinensis. [Method] The current-year bran-ches of Franxinus velutina ＂ Jinglli＂ , F. angustifolia ＂Raywood＂ , F. platyphylla ＂ Jinghuang＂ were used and the orthogonal experiment was em-ployed to investigate the effect of species, hormone types, concentrations and soaking time on the rooting of cuttings. [ Result] Results showed that tree species was the dominant factor in rooting rate, root number, root length and total root length. The best treatment combination for cutting of Franxinus Tree was Franxinus velutina 4 Jinglli5 Fraxinus ＋ ABTj ＋ 200 mg/L ＋ soaking 60 min. [ Conclusion ] This study can provide scientif-ic basis for rapid propagation of Fraxinus chinensis.