榆树杂交与苗期选择初步试验

Preliminary Test of Hybridization and Seedling Selection of Ulmus pumila L.

以春榆、裂叶榆、大果榆和白榆作为母本,以欧洲白榆为父本采用切枝室内水培法进行杂交试验。在试验中对杂交得到种子的难易程度、杂交种子发芽率、苗期地径和苗高生长量进行了比较,结果显示各个杂交组合杂交较易取得成功,就苗期数据来看,杂交优势明显。

In the spring of elm, elm, Ulmus macrocarpa lobed leaves and white elm as female parent, the European white elm as male parent the cut branches indoor hydroponics hybridization test. During the trial of hybrid seeds reach difficult easy degree, hybrid seed germination rate, seedling ground diameter and height growth rate were compared, the results showed different hybrid combination hybrid is easy to obtain the success, on the seedling data, hybrid advantage.