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长白落叶松木芯基本密度与材性指标相关及建筑材优良家系选择研究

李艳霞, 张含国, 邓继峰, 张磊

李艳霞, 张含国, 邓继峰, 张磊. 长白落叶松木芯基本密度与材性指标相关及建筑材优良家系选择研究[J]. 北京林业大学学报, 2012, 34(5): 6-14.
引用本文: 李艳霞, 张含国, 邓继峰, 张磊. 长白落叶松木芯基本密度与材性指标相关及建筑材优良家系选择研究[J]. 北京林业大学学报, 2012, 34(5): 6-14.
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LI Yan-xia, ZHANG Han-guo, DENG Ji-feng, ZHANG Lei. Correlations among wood density, wood physical mechanics index and growth trait, and selection of elite families for production of building products in Larix olgensis[J]. Journal of Beijing Forestry University, 2012, 34(5): 6-14.
Citation: LI Yan-xia, ZHANG Han-guo, DENG Ji-feng, ZHANG Lei. Correlations among wood density, wood physical mechanics index and growth trait, and selection of elite families for production of building products in Larix olgensis[J]. Journal of Beijing Forestry University, 2012, 34(5): 6-14.
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长白落叶松木芯基本密度与材性指标相关及建筑材优良家系选择研究

  • 1 东北林业大学林木遗传育种国家重点实验室2黑龙江省林业科学研究所 3北京林业大学水土保持学院，水土保持与荒漠化防治教育部重点实验室

Correlations among wood density, wood physical mechanics index and growth trait, and selection of elite families for production of building products in Larix olgensis

  • 1 State Key Laboratory of Tree Genetics and Breeding,Northeast Forestry University, Harbin, 150040, P. R. China； 2 Forestry Research Institute of Heilongjiang Province, Harbin, 150081, P. R. China； 3 Key Laboratory of Soil and Water Conservation ＆ Desertification Combating of Ministry of Education, School of Soil and Water Conservation, Beijing Forestry University, 100083, P. R. China.

摘要

    摘要
  • 摘要: 对24年生长白落叶松优树子代测定林14个处理（13个家系和1个对照）的生长性状、木芯基本密度进行遗传变异分析和方差分析，结果表明，家系间生长性状和木芯基本密度均存在较大变异，家系间生长性状差异极显著，木芯基本密度差异显著，树高、胸径、材积和木芯基本密度家系遗传力分别为0.73、0.72、0.80和0.60，进行家系水平的改良具有很大的潜力。生长性状、木芯基本密度与物理力学指标相关分析结果表明：生长性状与木芯基本密度、解析木基本密度、气干密度呈正相关不显著，与大多数力学指标间相关不显著；木芯基本密度与解析木基本密度、气干密度、径面抗劈力、抗弯弹性模量、抗弯强度、顺纹抗压强度和径面硬度呈极显著正相关，且回归分析模型比较理想，可以利用胸径木芯基本密度值预测物理力学指标值，间接选择和评价长白落叶松建筑材优良家系。通过生长性状和木芯基本密度综合分析选出166、169为优良家系，根据解析木物理力学性状选出的优良家系与其结果一致；树高、胸径、材积和木芯基本密度的遗传增益分别为14.27%、19.96%、48.12%和14.06%；优良家系树高、胸径、材积和木芯基本密度分别比对照高7.20%、13.31%、38.46%和4.76%。
    Abstract: The growth traits and wood density of 14 families of 24-year-old Larix olgensis progeny testing forests composed of 13 openpollinated families and one control were selected as the research object of this tractate, which went through genetic variation analysis and deviation analysis. The results showed that there were larger variations in both the growth traits among families and wood basic density, the differences of growth traits among families were extremely significant, the differences of wood basic density values were significant, and that the heritability values of height, diameter at breast height, timber volume and wood basic density were 0.73, 0.72, 0.80 and 0.60 respectively, which indicated that there was rather large potential for improving the family levels. The results of the correlation analysis of growth traits, wood basic density and physical mechanics indices showed positive but insignificant correlation between the growth traits and wood basic density, analytic timber basic density and drying density respectively and insignificant correlation between the growth traits and most physical mechanics indices; the wood basic density positively and extremely significantly correlated with analytic timber basic density, drying density, diametric cleavage strength, modulus of elasticity, bending strength, crushing strength parallel to grain and the hardness of the diametric plane, and the regression analysis model was ideal to predict the physical mechanics index values and indirectly select and assess the superior families of L. olgensis construction timber by use of diameter at breast height. Afterwards, the 166 and 169 were selected as the superior families after the synthesized analysis of the growth traits and wood basic density, which was the same as the superior families selected according to the physical mechanics traits of analytic timber; the heritability gains of height, diameter at breast height, timber volume and wood basic density were 14.27%, 19.96%, 48.12% and 14.06% respectively; the values of height, diameter at breast height, timber volume and wood basic density of superior families were higher than those of control by 7.20%, 13.31%, 38.46% and 4.76% respectively.
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出版历程
  • 收稿日期:  1899-12-31
  • 修回日期:  1899-12-31
  • 发布日期:  2012-09-29

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