三倍体毛白杨新无性系木材干缩性的遗传分析

doi:10.11707/j.1001-7488.20040122

Scientia Silvae Sinicae ›› 2004, Vol. 40 ›› Issue (1): 137-141.doi: 10.11707/j.1001-7488.20040122

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Genetic Analysis of Shrinkage of New Triploid Clones of Populus tomentosa

Xing Xinting,Zhang Zhiyi,Zhang Wenjie

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

Abstract

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

Xing Xinting;Zhang Zhiyi;Zhang Wenjie. Genetic Analysis of Shrinkage of New Triploid Clones of Populus tomentosa[J]. Scientia Silvae Sinicae, 2004, 40(1): 137-141.

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Genetic Analysis of Shrinkage of New Triploid Clones of Populus tomentosa

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