摘要
对杉木全同胞子代林的46个家系8年生和18年生的生长性状进行调查研究,结果表明:树高、胸径、材积及冠幅在不同家系间均存在极显著差异,且均具有较大的广义遗传力,遗传力为0.571 2～0.812 1。树高、胸径、材积及冠幅之间存在极显著的相关性,胸径和材积的相关系数达0.94以上,树高和材积的相关系数达0.80以上。从46个家系中选出2个优良家系,其材积遗传增益分别为44.99%和14.93%。
Growth traits of 46 families of Cunninghamia lanceolata full-sib filial generation at the age of 8 and 18 were investigated. The results showed that there were extremely significant differences among families in the growth of tree height, diameter, volume of individual tree and crown width. The families heritability of tree height, diameter, volume of individual tree and crown width was relatively large, which were between 0.571 2 and 0.812 1. Highly significant correlation were found among tree height, diameter, volume of individual tree and crown width, and the correlation coefficient between diameter and individual volume was over 0.94, the correlation coefficient between tree high and individual volume was over 0.80. Two superior families were selected from 46 families, of which the genetic gain of individual volume were 44.99% and 14.93%, respectively.
出处
《热带农业科学》
2013年第5期46-50,共5页
Chinese Journal of Tropical Agriculture
基金
广西"十一五"林业重大科技项目(No.桂林科字[2010]3号)
关键词
杉木
全同胞子代
优良家系
选择
Cunninghamia lanceolata
full-sib filial generation
superior family
selection
作者简介
蓝肖（1981-），女，硕士研究生，工程师，主要研究方向为林木遗传育种与丰产栽培技术；E-maii：57031848@qq．com。
通讯作者：黄开勇（1973-），男，硕士研究生，高级工程师，主要研究方向为林木遗传育种与丰产栽培技术；E—mail：huangky73@163．com。
