粗糠树枝条扦插育苗实验

The Experiment of Ehretia macrophylla Branch Cutting Propagation

摘要: 城市绿化中乡土树种的开发利用越来越重要。粗糠树开始进入人们的视线，苗木需求量越来越大。为探索粗糠树的快速繁殖，课题组着手研究粗糠树枝条扦插繁殖技术，以粗糠树一、二年生枝条为试材，采用对照与正交试验的方法，采用三种不同质量浓度(50、100、200 mg/L)的ABT浸泡粗糠树插穗，研究了粗糠树枝条扦插愈伤组织的产生，生根的情况以及繁殖的成活难易。得到如下结果：粗糠树的硬枝扦插生根能力较好，不同基质、插穗下切口形状及ABT处理对粗糠树硬枝扦插成活率有显著影响，质量浓度100 mg/L的ABT溶液处理的粗糠树硬枝扦插效果最好。

Abstract: In the urban greening, the development and utilization of native tree species is becoming more and more important. The Ehretia macrophylla began to have drawn the attention of the people and its seedling demand is increasing. To explore the rapid propagation of Ehretia macrophylla, with Ehretia macrophylla annual and biennial branches as test materials, this study adopted the method of contrast and the orthogonal experiment, using three different mass concentration (50, 100, 200 mg/L) ABT soak Ehretia macrophylla cuttings. The article studied Ehretia macrophylla cutting callus initiation, root-related and reproductive survival rate. The results indicate that: Ehretia macrophylla hard branch cuttage rooting ability is better; different substrate, the cutting slit shape and ABT soak have a significant impact to Ehretia macrophylla branch cutting survival rate. Mass concentration of 100 mg/L ABT solution treatment of Ehretia macrophylla hard branch cutting effect is best.