Anatomical variation of teakwood from unmanaged mature plantations in East Timor

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• 作者：Sofia Cardoso ; Vicelina B. Sousa ; Teresa Quilhó ; Helena Pereira
• 关键词：Anatomy ; Cell size ; Within ; tree variability ; Tectona grandis ; East Timor
• 刊名：Journal of Wood Science
• 出版年：2015
• 出版时间：June 2015
• 年：2015
• 卷：61
• 期：3
• 页码：326-333
• 全文大小：1,135 KB
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• 作者单位：Sofia Cardoso (1)
  Vicelina B. Sousa (1)
  Teresa Quilhó (1) (2)
  Helena Pereira (1)
  
  1. Centro de Estudos Florestais, Instituto Superior de Agronomia, Universidade de Lisboa, Tapada da Ajuda, 1349-017, Lisbon, Portugal
  2. Florestas e Produtos Florestais/Biotrop, Instituto de Investiga??o Científica Tropical, Tapada da Ajuda, 1347-017, Lisbon, Portugal
  
• 刊物类别：Biomedical and Life Sciences
• 刊物主题：Life Sciences
  Wood Science and Technology
  Materials Science
  Characterization and Evaluation Materials
  
• 出版者：Springer Japan
• ISSN：1611-4663

文摘

Teak (Tectona grandis L. f.) is an important native species of Southeast Asia, producing an excellent quality wood with high demand in the world market contributing positively to development and economic growth of the countries. There are few published studies on the anatomical variability of teak wood from East Timor. The wood anatomical characterization and its within-tree variation were studied in three axial and radial positions of trees from an unmanaged pure stand. The wood is semi-ring-porous to ring-porous. The vessels are solitary and grouped, with 206 and 89?μm diameter (earlywood and latewood) and 259?μm length. Axial parenchyma is paratracheal unilateral and marginal. Rays are homocellular and heterocellular, varying between 241 and 1293?μm in height. Fibers, the most abundant tissue (52?%), had a mean fiber length, width and wall thickness of 1.15?mm, 28 and 6?μm, respectively. The anatomical features of teak wood differ from those reported for other origins in considerably smaller vessels and thicker walled fibers. Longitudinal variation showed a decrease of vessel area, fiber size, and an increase of vessel frequency, parenchyma and ray proportions towards the top of the tree. Radially vessel size, fiber length and wall thickness tended to increase with cambial age.