摘要
对来自广西、湖南的28个杉木(Cunninghamia lanceolata)无性系进行对比试验研究,结果表明:各无性系间树高、胸径和单株材积均存在极显著的差异;无性系的树高、胸径和单株材积均具有较大的广义遗传力,林龄为17年生时,广义遗传力达0.9以上;以材积作为主要性状指标,筛选出柳46、柳300、柳88等6个优良无性系,入选的优良无性系其单株材积遗传增益最高达23.12%;无性系的树高、胸径和单株材积生长在3个年份测定中均表现稳定。
The comparative test was conducted to study the differences of 28 Cunninghamia lanceolata clones from Guangxi and Hunan. The results showed that there were highly significant differences in tree height, diameter and individual volume among clones. The broad-sense heritability of tree height, diame- ter and individual volume in clones was relatively large, which could reach 0. 9 in 17-year-old forest. There were 6 clones such as Liu No. 46, Liu No. 300 and Liu No. 88 which were selected by the standard of stem volume, among which the highest individual volume genetic gain was over 23. 12%. The tree height, diameter and individual volume of clones were stable among the tests for three years.
出处
《广西林业科学》
2012年第4期331-335,共5页
Guangxi Forestry Science
基金
广西"十一五"林业重大科技项目(桂林科字〔2010〕3号)
关键词
杉木
无性系
选育
Cunninghamia lanceolata
clone
selection
