Interclonal and within-tree variation in wood properties of poplar clones

编号 zgly0000301510

文献类型 期刊论文

文献题名 Interclonal and within-tree variation in wood properties of poplar clones

学科分类 220.99;林学其他学科

作者 FANGSheng-zuo  YANGWen-zhong 

作者单位 CollegeofForestResourcesandEnvironment 

母体文献 Journal of Forestry Research;林业研究: 英文版 

年卷期 2003,14(4)

页码 263-268

年份 2003 

分类号 S792.110.1  S781.1 

关键词 杨树  无性系  木材特性  密度  纤维特性  纤维素含量  变异  纤维长度  纤维直径  年轮 

文摘内容 The wood basic density, cellulose content and fiber form were investigated for all sample trees at breast height (1.3m) in seven poplar clones, and at 0 (butt), 5.6, 9.6, 13.6, 17.6, 19.6 and 21.6 m for clone Nanlin-95 and Nanlin-895, respectively,for providing information on variation patterns of wood density, fiber characteristics and holocellulose content within trees and among clones. The results showed that significant variations about wood density, cellulose content, fiber diameter and the ratio of fiber length to diameter existed among poplar clones examined. Variance analysis indicated that there were significant differences in wood basic density, fiber length, fiber diameter and cellulose content among the growth rings, which had an increasing tendency along the direction from pith to bark. The significant differences also existed in wood basic density, fiber length and fiber diameter at different tree height. The mean wood basic density had a general increase trend with increasing height of trees and the lowest was found at the base, while fiber length and fiber diameter had a general decline pattern with increasing height of trees and the biggest value was observed at the height of 5.6 m. Regression analysis indicated that the relationship between examined wood properties and growth ring number (cambial age), and the relationship between examined wood properties and tree height can be described by polynomial functions。