柳树基因资源收集与优树选择研究

Study on selection and collection of genetic resources of willow

为了选育柳树良种,对国内外的柳树种质资源进行了收集、保存,在调查研究的基础上,从山东省选择乔木柳优树90个。对收集的柳树种质资源采用无性繁殖方法进行异地保存,建立4处柳树种质资源库,面积共5.5hm^2。根据我省目前柳树主要呈散生、异龄分布的特点,以优势木对比法为基础,确定了适用于散生木、异龄木的选优方法,制定了适合的选优树高和胸径生长量标准,获得旱柳优树80株,观赏柳10株。

In order to breed fine willow, willow germplasm resources at home and abroad are collected, stored, on the ba- sis of investigation and research, from Shandong Province and 90 arbor willow plus trees.4 willow germplasm banks,with a to- tal area of 5.5 hm^2 were established to preserve the germplasm resources collected by means of asexual propagation.. Based on the fact that willow is sparsely scattered, the distribution characteristics of different ages, with the dominant comparative method, to determine the suitable selection method of Scattered trees, wood of different ages, making the growth standard se- lected for the tree height and DBH（ diameter at breast height ）, tree for Salix matsudana 80 strains, 10 strains of ornamental willow.