一、前言泡桐是我省的一个重要速生用材树种。由于它容易无性繁殖,所以生产上多采用埋根育苗。在泡桐良种化的方向上,也侧重于杂种优势利用和以选育优良无性系为主要目标的无性系育种。但是利用种根育苗,繁殖系数较低,一般一株3米左右的苗木,可剪取10—20个种根,这对于迅速繁殖和推广泡桐良种是一个限制因素。为了提高泡桐的繁殖系数,短期内繁殖大量良种,我们采用组织培养的方法,进行快速繁殖试验。 I. Introduction Paulownia is an important species of fast-growing timber in our province. Because of its easy asexual reproduction, so the production of more use of embedded root nursery. Paulownia in the direction of the seeds, but also focus on utilization of heterosis and breeding clones of the main objectives of the clonal breeding. However, the use of seedling nursery, breeding coefficient is low, usually a 3 m seedlings, can cut 10-20 kinds of roots, which is rapid propagation and promotion of Paulownia is a limiting factor. In order to improve the breeding coefficient of Paulownia, breeding a large number of high-quality seeds in the short term, we use the method of tissue culture, rapid reproductive experiments.