作者简介:陈建华(1955—), 男, 湖南桃江人, 博士,教授, 博士生导师, 主要从事林木育种与栽培的教学科研工作; E-mail:cjh11135@sina.com 通信作者:吴际友(1963—), 男, 湖南桃源人, 研究员, 博士生, 主要从事森林培育科研工作;E-mail:hnforestry@sina.com
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对5 年生台湾桤木无性系测定林研究表明:台湾桤木胸径和材积生长在无性系间存在显著差异,达极显著水平。无性系间重复力均较大,其中胸径和材积的无性系间重复力达0.5338 和0.5381,无性系生长稳定性较好。通过综合比较,选择出优良无性系 5 个,5 年生时平均材积遗传增益达2.31%,表现出明显的生长优势。
Based on the investigation and analysis on 5-year-old clone plantation of Alnus formosana, it was found that the testedplantation had better growth performance as a whole. There were highly significant differences among clones in the growth of diameterat breast height and stem volume. The clone repeatability of growth traits was relatively large, among which the clone repeatability ofdiameter at breast height and stem volume reached 0.5338 and 0.5381 respectively. The growth stability of clones was good. Comparedcomprehensively, the 5 superior clones which showed very fast growing rate were selected out, of which the average genetic gain of stemvolume at 5-year-old was 2.31%.