长白落叶松材性的地理变异  

THE GEOGRAPHIC VARIATION OF TIMBER PROPERTIES OF LARIX OLGENSIS

作　　者：杨传平[1] 杨书文[1] 陆文达[1] 刘桂丰[1] 庞志慧 夏德安[1] 吕清友[1] 张培杲[1] 

机构地区：[1]东北林业大学 [2]辽宁省森林经营研究所

出　　处：《东北林业大学学报》1991年第S2期26-31,共6页Journal of Northeast Forestry University

摘　　要：以凉水、草河口两个试验点10个长白落叶松种源为对象研究其材性的地理变异。在长白落叶松材性的遗传分化中,管胞形态特征的变异最为明显,特别是管胞长度遗传改良的潜力很大。经、纬向双重渐变是长白落叶松管胞形态变异的基本模式,木材密度、硬度、晚材率、年轮宽等性状随机变异的趋势比较明显。影响管胞形态地理变异的气候因子中,水湿条件是主导因素,其次是温度。This paper studied the geographic variation of the timber properties of 10 Larix olgensis provenances in Liangshui and Caohekou experimental places. Among the genetic differentiations of the timber properties of larch, the tracheid morphological changes are the most obvious,especially the genetic improvement potentialities of tracheid length is very great. The double gradual change belonging to longitude and latitude is the basic style of tracheid morphological variations of larch. The random variation tendency of timber density, hardness, late-timber percentage and age-ring width is obvious. Among the climatic factors which affect the geographic variation of tracheid morphological, moisture and rainfall are the principal factors, secondary is temperature.

关 键 词：长白落叶松 地理变异 管胞形态 

分 类 号：S7[农业科学—林学]