5个桉树无性系区域对比试验研究

Study on Regional Comparison Test of 5 New Eucalypt Varieties

为了筛选出适应性强的桉树无性系,选择在广西东门生长表现良好的5个桉树新品种,在广西的3个区域进行对比试验,检验由单点无性系对比试验选育出的优良无性系在不同地理区域中种植的生长性状及产量稳定性。结果表明,不同无性系间年均蓄积量差异显著,说明无性系间的选择有意义;不同地点间差异不显著,无性系与地点间的互作效应不显著,说明无性系适应性广;依据丰产性、增益性及其稳定性进行无性系适应性综合评价,DH288-4、DH299-5和DH306-3表现较好。

In order to select eucalypt clones with strong adaptability,five new eucalypt varieties with good growth performance in Dongmen of Guangxi were selected and compared in three areas of Guangxi.Growth traits and yield stability of excellent clones selected from single point clonal comparative test in different geographical regions were tested.Results showed that annual average accumulations among different clones were significantly different,which showed that selection of clones was significative.There were no significant differences among different areas,and interaction effect between clones and areas was not significant,which showed that clones had wide adaptability.According to comprehensive evaluation of clonal adaptability based on high yield,gain and stability,DH288-4,DH299-5 and DH306-3 had great performances.