B. Šilinskas, I. Varnagirytė-Kabašinskienė, Lina Beniusiene, M. Aleinikovas, M. Škėma, V. Baliuckas
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引用次数: 0
摘要
银桦是一种广泛分布的落叶乔木,原产于欧洲,因其木材可用于建筑、家具制造和造纸而备受重视。在立陶宛,银桦树是第三大常见的林木品种,占森林面积的 22%,由于其潜力和适应性,银桦树是树木育种的重要品种。这项研究的重点是评估不同半同胞系的银桦(Betula pendula L. Roth.)树木的木材机械性能(样本和原木硬度、木材密度、动态弹性模量(MOEdyn)、静态弹性模量(MOE)和弯曲强度(MOR))。我们分析了立陶宛不同地区银桦树种群(半同胞家系)的两个实验种植园。从这些种植园中选择了四个基因家族进行机械性能评估。研究结果表明,尽管静态弹性模量在所选基因家族之间没有明显差异,但不同基因家族的各种木材特性存在显著差异。所有测得的木材特性都从模型树的底部向顶部递减。木材硬度与木材密度呈中度负相关,与MOE和MOR呈弱相关。鉴于木材硬度与其他木材机械特性之间的相关性较弱,建议将 MOEdyn 作为更适合遗传研究的性状。
Evaluation of Mechanical Wood Properties of Silver Birch (Betula pendula L. Roth.) of Half-Sib Genetic Families
Silver birch, a widely distributed deciduous tree native to Europe, is valued for its wood applications in construction, furniture making, and paper production. In Lithuania, silver birch ranks as the third most common forest-tree species, comprising 22% of the forested areas, and is an important species for tree breeding due to its potential and adaptability. This study was focused on assessing the mechanical properties of wood (sample and log hardness, wood density, dynamic modulus of elasticity (MOEdyn), static modulus of elasticity (MOE) and bending strength (MOR)) in silver birch (Betula pendula L. Roth.) trees from different half-sibling families. Two experimental plantations of the progenies of Lithuanian populations (half-sib families) of silver birch from different regions were analysed. From these plantations, four genetic families were selected for mechanical properties evaluation. The study findings revealed significant variability in various wood properties among different genetic families, although the static modulus of elasticity did not exhibit significant differences between the chosen genetic families. All measured wood properties decreased from the bottom to the top of the model trees. Wood hardness displayed a moderately negative correlation for wood density and weak correlations for MOE and MOR. Given the weak correlations between wood hardness and other wood mechanical properties, it is suggested that MOEdyn would be a more suitable trait for genetic studies.
期刊介绍:
Forests (ISSN 1999-4907) is an international and cross-disciplinary scholarly journal of forestry and forest ecology. It publishes research papers, short communications and review papers. There is no restriction on the length of the papers. Our aim is to encourage scientists to publish their experimental and theoretical research in as much detail as possible. Full experimental and/or methodical details must be provided for research articles.