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毛白杨(Populus tomentosα)树干通直高大,寿命长,生长快,适应性强,是用材林和城市绿化的优良树种,是我省优良的乡土树种之一。其优株的无性系苗木,生长速度比普通毛白杨快15—20%,经济价值更高。但毛白杨扦插不易生根,繁殖困难。为了快速扩大优良无性系的繁殖,为生产提供大量种苗,我们从1986年4月开始用组织培养的方法,培养毛白杨高体茎段,获得了完整的植株,现在移栽成活。 一、试验材料 采自我所毛白杨课题组引进的毛白杨优良无性系1—2年生的嫁接苗。
The trunk of Populus tomentos is straight and tall, long life, fast growth and strong adaptability. It is an excellent species of tree and urban greening and one of the fine native species in our province. Its superior strains of clonal nursery stock, the growth rate of 15-20% faster than ordinary Poplar, higher economic value. However, Populus cuttings not easy to root, breeding difficulties. In order to rapidly expand the breeding of excellent clones and provide a large number of seedlings for production, we started from April 1986 with the method of tissue culture to cultivate the stem segments of Populus tomentosa high body to obtain the intact plants and now transplanted alive. First, the test material was collected from the poplar Young Populus Project Group introduced 1-2 clones of fine clone cloned seedlings.