马尾松人工林管胞长度的株间和株内变异  

Tracheid Length Variations within and among Trees in Plantation of Masson Pine

作　　者：黄光霖 周志春[2] 

机构地区：[1]福建省南平造纸营林总公司 [2]中国林业科学研究院亚热带林业研究所

出　　处：《林业科学研究》1993年第2期222-227,共6页Forest Research

摘　　要：林木株间变异和株内变异是木材的两个主要变异来源,由于木材性状具有较强的遗传性以及育林措施对木材的可塑性,人们可以培育出材质优异的木材,然而因变异的存在,在如何充分利用木材时却遇到了许多困难。林学家的一个主要目的就是在充分掌握木材变异规律的基础上,采用有效方法提高材质的均匀性。There were highly significant variations within and among trees in plantation of Masson Pine for latewood tracheid length. The tree, ring and tree x ring interaction effects accounted for 13%, 39% and 9% of total variation respectively, and the radial effects were small. Variations from the pith to the bark and from the base to the top complied with the general rules of tracheid length in conifer. Theoretically, the combination of ten trees and one radius was a better sampling strategy which would estimate effectively the wood properties of a population or a strain. The age of transition from juvenile to mature wood for tracheid length of plantation was about 12 years and was more than one of natural stands in the same geographical region. The percentage of juvenile wood decreased dramatically with tree ages and varied with different individuals.

关 键 词：马尾松 人工林 管胞 变异 株间 

分 类 号：S791.248[农业科学—林木遗传育种]