木材材性株内径向变异模式初探*IV. 17个欧美杨无性系木材密度径向变异模式的研究

Abstract

Abstract:

The radial variation patterns of wood density in 17 Populus×euramericana clones were studied by x-ray wood densitometry.The main results obtained are:1)The general trends of the density profiles of the trees were similar, while there existed a certain degree of variations among clones and even within a clone.Therefore, the indefiniteness in describing the variation patterns is inevitable. 2)There existed significant differences in the average ring densities at various ages.3)The interclonal age-age coorelations of the average ring density were significant, indicating the feasibility of the early selection among clones.4)The correlations between average ring density and maximum and minimum densities in the variation affected by ages differed from those affected by clones.Significant negative correlations between ring density and ring width were shown in the variation affected by clones.

Key words: wood density, Radial variation pattern, Populus×euramericana, Clone

Xiuqin Luo,Xiaoming Wen,Ning Guan,Dongsen Huang. PRELIMINARY STUDIES ON RADIAL VARIATION PATTERNS OF WOOD PROPERTIES WITHIN TREES IV. STUDIES ON THE RADIAL VARIATION PATTERNS OF WOOD DENSITY IN 17 POPULUS× EURAMERICANA CLONES[J]. Scientia Silvae Sinicae, 1997, 33(1): 75-82.

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PRELIMINARY STUDIES ON RADIAL VARIATION PATTERNS OF WOOD PROPERTIES WITHIN TREES IV. STUDIES ON THE RADIAL VARIATION PATTERNS OF WOOD DENSITY IN 17 POPULUS× EURAMERICANA CLONES

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1	管宁, 姜笑梅, 文小明. 木材侏内材性径向变异模式初探I.论木材材性株内径向变异模式的系统研究. 林业科学, 1996. 32 (4): 366- 377.
2	文小明, 骆秀琴, 管宁. 七个加勒比松种源木材密度径向变模式的研究. 林业科学, 1996. 32 (5): 460- 469.
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