桃金娘扦插繁殖研究

Research on Cutting and Propagating of Rhodomyrtus tomentosa

[目的]研究桃金娘(Rhodomyrtus tomentosa)扦插生根的最佳条件。[方法]采用单因素试验设计,以生根率、生根数和平均根长为生根指标,探讨扦插基质、插穗年限和萘乙酸、吲哚丁酸等因素对桃金娘扦插生根的影响。[结果]3种基质中,含沙黄土作为扦插基质最优;1年生桃金娘插穗生根率最高;萘乙酸100 mg/L+吲哚丁酸100 mg/L为植物生长调节剂的桃金娘生根率达到40.67%,生根数6.77条,平均根长5.63 cm。[结论]该研究为桃金娘扦插繁育提供试验技术支撑。

[ Objective ] The research aimed to study the the best cutting propagation condition of Rhodomyrtus tomentosa. [ Method ] Using single factor experiment, the rooting rate, rooting numbers and average root length were used as rooting indexes, the effects of cutting medium, cutting age and naphthylacetic acid（NAA） and indolebutyric acid （IB A） on rooting of Rhodomyrtus tomentosa were studied. [ Result ] There were better rooting rate of loess among 3 kinds of matrix. One year old cutting slips were better than others. 100 mg/L NAA and 100 mg/L IBA could in-creased rooting rate to 40.67% ,number of rooting were 6.11, root length was 5 .63 cm. [ Conclusion ] The study provides experimental technical support for the cutting propagation of Rhodomyrtus tomentosa.