文献类型：期刊文献

中文题名：顶果木天然林优树的选择标准

英文题名：A study on selection standard for superior tree of Acrocarpus fraxinifolius

作者：刘志龙[1] 马跃[1] 谌红辉[1] 刘光金[1] 李洪果[1] 全昭孔[1] 莫慧华[1] 蒙明君[1]

第一作者：刘志龙

机构：[1]中国林业科学研究院热带林业实验中心

年份：2014

卷号：38

期号：5

起止页码：153-156

中文期刊名：南京林业大学学报：自然科学版

收录：CSTPCD;;北大核心:【北大核心2011】；CSCD:【CSCD2013_2014】；

基金：中国林科院基本科研业务费专项项目(CAFYBB2011005-8)

语种：中文

中文关键词：顶果木;优树选择;干形;分枝数;冠径比

外文关键词：Acrocarpus fraxinifolius; superior tree selection; stem form; ramification number; ratio of crown to diameter

分类号：S722

摘要：通过对广西顶果木种质资源的调查,实测了3个市(县)89株顶果木的数量性状、质量性状及环境因子,选出候选优树20株。对候选优树6个形质性状进行主成分分析后选择出干形、分枝数和冠径比作为顶果木选优的主要性状。采用基准线法初选优树15株,再以形质指标评分法复选优树9株,入选率45%,可供近期无性繁殖利用。
Base on the investigation genetic resources of Acrocarpus fraxinifolius in Guangxi Autonomous Region,the quantitative properties,qualitative properties and environmental factors of 89 A. fraxinifolius in 3 counties were measured and 20 candidate superior trees have been selected. The principal component analysis about 6 properties of these candidate trees showed that stem form,branch numbers and ratio of crown to diameter could be used as the main indices for selection superior trees of A. fraxinifolius. We have selected 15 preliminary superior trees by baseline method and then selected 9 elite superior trees for the recent clonal propagation by form quality index evaluation method,the selection rate was 45%. This paper have proposed standards and methods for superior tree selection of A. fraxinifolius natural forest in Guangxi Autonomous Region,the purpose of this artice was to establish the science foundation of genetic improvement and innovation utilization.