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林业科学 ›› 2000, Vol. 36 ›› Issue (zk): 125-130.doi: 10.11707/j.1001-7488.2000S119

• 研究简报 • 上一篇    下一篇

毛白杨无性系木材基本密度遗传变异研究

宋婉 张志毅 续九如   

  1. 北京林业大学森林资源与环境学院,北京100083
  • 收稿日期:1997-08-08 修回日期:1900-01-01 出版日期:2001-01-25 发布日期:2001-01-25

STUDY ON INHERITANCE AND VARIATION OF WOOD BASIC DENSITY OF POPULUS TOMENTOSA Carr. CLONES

Song Wan,Zhang Zhiyi,Xu Jiuru   

  1. College of Forest Resources and Environment, BFU Beijing100083
  • Received:1997-08-08 Revised:1900-01-01 Online:2001-01-25 Published:2001-01-25

关键词: 毛白杨, 木材基本密度, 遗传变异

Abstract:

Wood basic densityies of about 100 Populus tomentosa Carr. clones grown in 4 clone testing plantations located in Hebei, Henan, Shandong and Gansu were tested and its inheritance and variation among clones and sites were studied. The results showed that the average wood basic density of the studied clones was 0.4363g/cm3 and there was significant difference in wood basic density between clones and sites. The high value of clonal repeatability(0.82~0.91)of wood basic density indicated that the character was under strong genetic control. Correlation analysis showed general significantly negative correlation between growth traits(including diameter at breast height, height, and volume) and wood basic density, although the correlation coefficients varied in a certain degree from one site to another. Studies on wood properties and relationships between tree growth and wood quality are of importance in such fields as wood properties breeding and combined improvement of both growth and wood quality.

Key words: Populus tomentosa Carr., Wood basic density, Inheritance and variation