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林业科学 ›› 2004, Vol. 40 ›› Issue (1): 137-141.doi: 10.11707/j.1001-7488.20040122

• 论文及研究报告 • 上一篇    下一篇

三倍体毛白杨新无性系木材干缩性的遗传分析

邢新婷 张志毅 张文杰   

  1. 北京林业大学毛白杨研究所,北京100083;北京林业大学基础科学与信息工程学院,北京100083
  • 收稿日期:2002-07-01 修回日期:1900-01-01 出版日期:2004-01-25 发布日期:2004-01-25

Genetic Analysis of Shrinkage of New Triploid Clones of Populus tomentosa

Xing Xinting,Zhang Zhiyi,Zhang Wenjie   

  1. Institute of Populus tomentosa, Beijing Forestry University Beijing100083;College of Basic Science and Information Engineering, Beijing Forestry University Beijing100083
  • Received:2002-07-01 Revised:1900-01-01 Online:2004-01-25 Published:2004-01-25

摘要:

利用9a生三倍体毛白杨测定林的9个无性系为试材,着重研究了木材干缩率的遗传学问题。结果表明:木材干缩率在无性系间的差异都达到了极显著水平,并受到强度遗传控制;木材干缩在株内纵向的变异模式是随树高增加而降低;全干体积,径向、弦向干缩率和气干体积,径向、弦向干缩率无性系重复力分别为 0.89,0.95 ,0.84 ,0.67,0.84和0.68。

关键词: 毛白杨, 三倍体无性系, 干缩率, 遗传变异, 重复力

Abstract:

The wood samples of 9 triploid clones of Populus tomentosa were cut from 9-year-old clonal stand.The oven-dried and air-dried samples were used to study their genetic variation in shrinkage. The results indicated that there were significant differences between clones and all the coefficients of shrinkage that were found to be under strong genetic control. The vertical variation pattern within tree of shrinkage was downward with the tree height. The clonal repeatability's in shrinkage of oven-dried and air-dried timber in volume, radial and tangential direction were respectively 0.89,0.95,0.84,0.67,0.84 and 0.68.

Key words: Populus tomentosa, Triploid clone, Shrinkage, Genetic variation, Repeatability