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首页> 外文期刊>IAWA Journal >Wood anatomical and topochemical analyses to characterize juvenile and adult wood of lesser-known species from Central America (Mexico)
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Wood anatomical and topochemical analyses to characterize juvenile and adult wood of lesser-known species from Central America (Mexico)

机译：木材解剖学和Topochemical分析，以中美洲（墨西哥）表征少年已知种类的少年和成人木材

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Anatomical and subcellular characteristics of juvenile and adult wood of seven species (Manilkara zapota (L.) P. Royen, Platymiscium yucatanum Standl., Lonchocarpus castilloi Standl., Roseodendron donnell-smithii (Rose) Miranda, Terminalia buceras (L.) Wright, Tabebuia rosea (Bertol.) DC., Lysiloma latisiliquum (L.) Benth. from Mexico, including a histometric evaluation, were investigated by light microscopy with a digitized image analysis system and by X-ray diffractometry using the SilviScan (R) system. The topochemical distribution of lignin and phenolic deposits in the tissue was studied by means of cellular UV-microspectrophotometry (UMSP). Extractive contents (acetone / water and water) were determined gravimetrically. The results of the structural and topochemical analyses were compared with the interrelations of certain anatomical and subcellular structures as well as the topochemical composition with regard to the physical and mechanical properties of the timbers investigated. The objective was to provide a detailed cellular and subcellular description of the heartwood of seven lesser-known timbers from Central America. All examined tree species show significant differences between juvenile and adult heartwood. For individual species, however, the differences vary greatly and have to be individually assessed in addition to general trends observed for all studied species. It has been shown that vessel size, fibre length, size of fibre lumina, and height and width of rays, as well as the content of extractives and topochemical composition of the cell walls, are suitable indicators for the differentiation of the two heartwood types. The results also contribute to a better understanding of the wood properties of the investigated timbers in relation to their utilization and added value increase.
机译：七种物种少年和成人木材的解剖学和亚细胞特征（Manilkara Zapota（L.）P. Royen，Platymicium Yucatanum Standl。，Roseodendron Donnell-Smithii（玫瑰）Miranda，终端炎（L.）Wright， Tabebuia Rosea（Bertol.）DC。，Lysiloma LatiSiliquum（L.）Benth。通过使用Silviscan（R）系统的光学显微镜和X射线衍射测定来研究包括组织物测量的墨西哥，包括X射线衍射测定。通过细胞UV微型分光光度法（UMSP）研究了组织中木质素和酚醛沉积物的Topochemical分布。热分析萃取物（丙酮/水和水）。与相互关系进行比较结构和TopeChemical分析的结果在研究中，某些解剖学和亚细胞结构以及关于对木材的物理和力学性能的脱髓鞘组合物。目的是提供来自中美洲七个鲜为人知的木材的详细细胞和亚细胞描述。所有检查的树种物种都表现出少年和成人心材之间的显着差异。然而，对于个体种类，差异很大，并且除了对所有研究的所有物种观察到的一般趋势，还必须单独评估。已经表明，叶片尺寸，纤维长度，纤维叶片尺寸和射线的高度和宽度以及细胞壁的提取物和类别化学组成的含量，是两个心材类型的差异化的合适指标。结果还有助于更好地了解所调查的木材的木质性质与其利用和增加的价值增加。

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