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杨树无性系木材纤维长度和宽度的株内变异(PDF)

《南京林业大学学报(自然科学版)》[ISSN:1000-2006/CN:32-1161/S]

Issue:
2003年06期
Page:
23-26
Column:
研究论文
publishdate:
1900-01-01

Article Info:/Info

Title:
Variation of Fiber Length and Fiber Width for Seven Poplar Clones
Article ID:
1000-2006(2003)06-0023-04
Author(s):
YANG Wenzhong FANG Shengzuo
College of Forest Resources and Environment Nanjing Forestry University,Nanjing 210037,China
Keywords:
Poplar cloneFiber lengthFiber widthVariation pattern
Classification number :
S718.47
DOI:
10.3969/j.jssn.1000-2006.2003.06.006
Document Code:
A
Abstract:
The fiber length(l) and width of 7 poplar clones were measured and studied in this paper.It shows there are no significant differences in variation of fiber length at breast height in 6,8,and 11 years old among 7 poplar clones.The order of fiber length is lI69>lI72>lNL895>lNL1388>lNL447>lNL351>lNL95 among 7 poplar clones of 11 years old.The fiber length of I69 is 6.6% longer than NL95 within 11 years old.Fiber length and fiber width gradually increase from pith to bark,but fiber width variation is not so remarkably like fiber length.Within a single tree fiber length is the shortest at the base of trees and increases from base to peak,and it reaches the longest at above 5.6 m within the tree.After maintaining stabilization to 17.6 m it starts to declines within a single tree.The mean fiber width is the widest within 3.6 m,but it will decrease above 3.6 m in a single tree.The notable linear,polynomial,index and power relationship exist between fiber length and growth rings.And linear,polynomial,index regression mainly exist between fiber length and tree height.But the physiological age would affect fiber shape trait in poplars.

References

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Last Update: 1900-01-01