摘要
对 1 98 1年营造的湿地松 43个半同胞家系测定林的研究结果表明 :家系树高、胸径、材积、干形、枝粗、木材密度等生长、形质和木材性状有显著的差异 ,具有适度的遗传力 ,而未发现管胞长度显著的家系效应。生长性状和木材性状在一定程度上受遗传因素所控制 ,树高、胸径、材积间呈正遗传相关关系 ,木材基本密度、管胞长度和材积生长相关关系不显著。据此 ,利用约束和无约束选择指数 ,根据纸浆材和建筑材不同材种要求 ,进行生长、形质和材性联合选择 ,评选出Ⅳ 4 7#、2 4 6 #、0 6 0 9#和 0 4 6 4#等 4个家系为最佳纸浆材家系 ,0 1 87#、0 4 6 4#和 0 6 0 9#等
The test result from slash pine experimental forest of 43 half\|sib family's planted in 1981 shows that there are significant difference in height, DBH (diameter at breast height), volume, stemform, branch diameter and timber density among different families, which possesses some heritability and the significant family effect of the tracheid length was not found; the growth and timber characteristics are controlled to certain extend by genetic factors. There are positive correlation among height, DBH and volume while the correlation among timber density, tracheid length and volume growth isn't obvious. Therefore, with the help of constraint and free selection indexes, and according to different demand between pulpwood and building timber, combination selection of growth, quality and timber properties,was carried out. Four families, No. Ⅳ 47 #,2 46 #,0 609 #and 0 464 #,are the best for pulp wood, and three families of NO. 0 187 #,0 464 # and 0 609 # are suitable for building timber.
出处
《林业科学》
CAS
CSCD
北大核心
2000年第Z1期56-61,共6页
Scientia Silvae Sinicae
基金
国家"八五"重点攻关项目! 85 0 1 0 3内容之一。
关键词
湿地松
半同胞家系
遗传变异
联合选择
经济性状
Slash pine, Half\|sib family, Genetic variation, Growth timber quality and form, Combination selection
