毛白杨无性系木材基本密度遗传变异研究  

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

作　　者：宋婉[1] 张志毅[1] 续九如[1] 

机构地区：[1]北京林业大学森林资源与环境学院,北京100083

出　　处：《林业科学》2000年第z01期125-130,共6页Scientia Silvae Sinicae

基　　金：国家"九五"科技攻关毛白杨子专题! ( 96 0 11 0 2 13 0 2 )部分研究内容

摘　　要：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 4363?g/cm 3 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.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 4363?g/cm 3 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.

关 键 词：毛白杨 木材 基本密度 遗传变异 无性系 

分 类 号：S792.117[农业科学—林木遗传育种] S781.31[农业科学—林学]