摘要
以马尾松(Pinus massoniana)高产脂种子园自由授粉家系子代测定林为对象,分析了4年生家系生长性状(树高、胸径、材积和活轮枝数)及抗虫性的遗传变异规律,估算了各性状的遗传力,并进行了相关性分析。结果表明,除抗虫性存在显著差异外,材积、胸径、树高、活轮枝数生长性状在家系间均存在极显著的遗传差异;生长性状受较强遗传力控制,而抗虫性受中强度遗传力控制;家系各生长性状间具有高度相关性,而产脂力、抗虫性和各生长性状间没有相关性。利用最佳线性预测的单性状(材积)及多性状联合(抗虫性和家系产脂力)估算家系育种值,选出了2个马尾松优良家系作为桂东南育种和推广材料。
Using the progeny test plantation of open-pollinated families in high-yield rosin seed orchards of Pinus massoniana as material, the growth traits （height, DBH, stem volume, and live branch num ber） of 4-year-old family and the genetic variation rule of insect resistance were analyzed, and the herita bility of all traits was estimated, and correlations were analyzed. Results showed that there were extremely significant differences for traits of height, DBH, stem volume, and live branch number, except for the insect resistance with significant differences among families. Growth traits were under strong genetic con trol, while the insect resistance was the middle genetic control. There were high correlation among growth traits of all families, but no correlation among rosin-producing capacity, insect resistance and the growth traits. By using the best linear prediction single-trait （volume） and multiple traits combined （in sect resistance and families rosin-producing capacity） to estimate breeding value, two superior families of Pinus massoniana were selected as breeding and commercial materials in southeast of Guangxi.
出处
《广西林业科学》
2013年第3期249-252,共4页
Guangxi Forestry Science
基金
广西林业重点招标项目(桂林科字2009-4)
关键词
马尾松
高产脂
种子园
家系
选择
Pirtus massoniana
high-yield rosin
seed orchard
families
selection
