摘要
以四川省富顺县国营林场马尾松初级种子园58个半同胞家系子代为研究对象,在四川富顺国营林场开展苗期试验,测定6月龄苗期苗高、地径和冠幅3个性状。采用方差分析、遗传力估算、相关分析等方法对测定数据进行统计分析。结果表明:马尾松家系间苗高、地径和冠幅等生长性状均达极显著差异,表明马尾松半同胞家系间存在较为丰富的变异,选育潜力较大;苗高、地径和冠幅3个性状遗传力较高,属强度遗传;苗高、地径和冠幅三个性状之间呈显著正相关,尤以苗高与地径相关密切;以苗高、地径2个主要苗期生长性状,选出6个苗期生长较快的家系。
Studies were made of the open pollinated seeds of 58 Pinus massoniana families from the seed orchard in Fushun Forest Farm in Sichuan Province. Seedling cultivation was done with complete random block design. The data of height , ground diameter and crown width of six-month-old seedlings were analyzed by variance analysis, heritability evaluation and correlation analysis. The results showed that the differences in these growing characters were significant among families. It was indicated that the improvement potential was notable. According to the results of correlation analysis, significant positive correlation was found among height, ground diameter and crown width of seedlings. The heritability of three traits was higher which was strongly under genetic control. The characteristics of seedling height and seedling ground diameter could be regarded as the most important indexes for selection. Six fast-growing families were selected for further experiment and popularization.
出处
《四川林业科技》
2009年第3期18-21,17,共5页
Journal of Sichuan Forestry Science and Technology
基金
林木种质资源"基本库"标准化整理整合与共享(2005DKA21003-02)
林木
花卉基因资源发掘与种质创新利用研究(2006BAD13B07)
四川省优良林木种质资源收集
保存与创新利用研究
四川优良林木种质资源基因库建设
林木种质资源库及相关数据信息
关键词
马尾松
无性系种子园
苗期测定
家系选择
Pinus massoniana, Clonal seed orchard, seedling trail, Family selection
