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作 者 ：姜笑梅 许明坤 黄东森

期 刊 ：林业科学 1997年 33卷 2期 页码：168-175

关键词：纤维长度；径向变异模式；木材；欧美杨无性系；

Keywords:Fibre length, Ridial variation patterns, Wood, Clones of Populus×euramericana,

摘 要 ：15个欧美杨无性系木材纤维长度的株内变异模式大致相似,但各无性系间以至无性系内株间仍有差异。纤维长度变异模式的数字特征在无性系间有显著差异,表明纤维长度在无性系间选择有潜力,选择不仅可在纤维长度的平均水平上,而且也可在变异模式上进行。用聚类方法,将15个无性系的纤维长度径向变异模式分为3组,并可用数学公式Y=C₁+C₂×X₂+C₃exp(-C₄×X₁)表达。不同无性系系变异曲线虽有交叉,但年-年相关显著,木材纤维长度的早期选择是可行的

Abstract:The radial variation patterns of wood fibre length of 15 clones of Populus×euramercana were geneerally the same．But there existed a certain degree of interclonal and intraclonal variation．Average fibre length at various ages and the parameters related to variation patterns as well varied significantly among clones．This encourages the improvement of both the average level of fibre length and its variation patterns by selection and breeding．The radial variation patterns of fibre length of 15 clones were divided into three groups by classical analysis and expressed using the methematical model Y=C_l+ C₂×X₂+C₃exp(-C₄×X₁)．There existed intersection between fibre length profiles of different clones，but the age--age correlation were significant，indicating that the early-selection among clones is feasible．

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