摘要
以群众杨改良无性系研究了木材材性性状的遗传及性状之间的相关。９个性状纤维长、纤维宽、长宽比、纤维壁厚、木材密度、年轮宽、树高、胸径、材积在无性系间存在显著或极显著的差异。纤维长、长宽比和木材密度具有较高的重复力，较大的遗传变异系数和遗传增益，三性状同性状３—４年与５—６年之间的相关达显著或极显著水平。简单相关、典型相关、通径分析均表明木材密度与纤维性状、生长性状是独立的。通径分析表明纤维长、树高、胸径对材积有较大的直接作用，纤维长宽比、纤维壁厚对材积的直接作用为负。纤维性状与生长性状两组性状之间由于纤维定与材积、长宽比与树高、壁厚与年轮竞之间的相关而达显著相关。
This paper studies the inheritances and correlations of wood quality char acteristics among Populus×'popularis'improved clones.The significant diff erences among.clones were found in fiber length,fiber widness,ratio of len gth to widness,(doublp) wall thickness,wood specific gravity,widness of annual ring,tree height,DBH and volume.1.Higher reapitabilities,larger genetic'coefficients of variation and genetic gains were found in fiber length,ratio of length ti widness and woodspecific gravity.2.No significant correlations were found'between wood specific gravity and growth traits,wood specific gravity and fiber traits according to three methods of simple correlation,path analysis add canonical correlation anal ysis.3.Fiber length,tree height and DBH have larger direct effect to volume.Fiber widness and ratio of fiber length to widness have negativ direct effect to volume.4.Two group traits of fiber traits and growth traits were significant correlation due to the correlations of fiber widness with volumel ratio of length to widness with tree height ;fiber wall thickness with widness of annual ring.
出处
《林业科学》
CAS
CSCD
北大核心
1995年第1期44-50,共7页
Scientia Silvae Sinicae
基金
国家"八五"攻关专题
关键词
群众杨改良
遗传
木材密度
纤维
通径分析
Improvement of Populut ×'Popularis',Inheritance,Wood specific gravity,Fiber,Path analysis, Canonical correlation analysis
