4种生根促进剂对大叶女贞扦插生根的影响

Effects of Different Rooting Accelerators on Rooting of Ligustrum lucidum Ait

为筛选大叶女贞最佳生根促进剂,以大叶女贞优良抗寒单株一年生萌条为试验材料,采用萘乙酸、吲哚丁酸、萘乙酸钠、吲哚丁酸钾在50,100,200 mg·L^(-1)慢浸,和300,500 mg·L^(-1)速蘸进行处理,统计大叶女贞生根率、生根数和最长根长。结果表明:与对照组相比,4种生根促进剂和5个浓度处理均可显著提高大叶女贞生根率;4种生根促进剂仅萘乙酸处理,5个浓度中仅200 mg·L^(-1)浓度处理可显著提高大叶女贞生根数;4种生根促进剂和除500 mg·L^(-1)外的其他4个浓度处理均可显著提高大叶女贞最长根长。运用隶属函数进行综合分析,各处理中以萘乙酸200 mg·L^(-1)对大叶女贞的生根综合效果最好,其次为吲哚丁酸钾200 mg·L^(-1)。

In order to screen the optimum rooting accelerator tbr Ligustrum lucidum Ait, the cuttings from annual plants with good cold resistance were processed using Naphthalene acid, Indolebutyric acid, Sodium naphthalene-l-acetate, Potassium 4-butanoate at the concentration of 50, 100, 200 mg·L^-1 for slow-soaking and 300, 500mg·L^-1 for quick dipping, and the rooting rate, root number, and longest root length were recorded. The resuhs showed as follows： compared with the control, four difterent rooting agents and five difterent concentrations significantly increased the rooting rate, only naphthalene acetic acid in four rooting agents and 200mg·L^-1 in five concentrations increased the root numbers significantly, four rooting agents and the remained 4 concentrations except 500 mg·L^-1 significantly improved the longest root length. Comprehensive analysis by subordinate function, the optimal rooting accelerator was Naphthalene acid, and the optimal concentration was 200 mg.L-1, and then was Potassium 4-butanoate under the concentration of 200mg·L^-1.