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在林木无性系育种中,作为成年优树的无性繁殖方法,不仅要求能繁殖出众多的无性系分株,满足无性系测定的需要,而且还要求所繁殖出的苗木,能解除成年大树的老化,恢复幼态,克服枝条的位置效应,消除不同母树的年龄差别,使优树无性系测定的试材,具有幼年性、一致性和可比性的共同基础。本文系统地阐述了对940株毛白杨优树进行挖根、人工促萌、根出条嫩枝扦插的快速繁殖方法及其应用的效果。同时对其中所涉及的10个试验因子,都一一作了分析与讨论。
In clonal breeding of tree clones, as a method of clonal propagation of adult elite trees, not only the clonal ramets that can reproduce a large number of clones to meet the needs of clonal determination, but also require the breeding of seedlings, can lift adult trees Aging and recovery of young state, overcome the position effect of branches and eliminate the age difference of different mother trees, so that the test materials for determination of elite tree clones have the common basis of juvenility, consistency and comparability. This paper systematically expounded the rapid propagation of 940 Populus tomentosa tree root digging, artificial sprouting, root out shoots of rapid propagation method and its application effect. At the same time, the 10 test factors involved are analyzed and discussed.