Tension wood. Quantitative evaluation, formation and role in the tree
1997
Jourez, B. (Ministere de la Region Wallonne, Gembloux (Belgium). Station de Recherches Forestieres)
This article deals with the gelatinous fibres quantification, the mechanism of their formation and their functions in the tree. The tension wood of arborescent dicotyledons differs from normal wood by its anatomical, chemical, physical and mechanical characteristics which give to it a specific behaviour. It represents for the plant an efficient mechanism allowing adaptation and harmonious development in its own environment. Beyond a certain proportion, the presence of this tissue becomes injurious for the quality of the material and a major defect in some species for the user. In its development interfer complex mechanisms able to perceive endogenous and exogenous stimuli acting on the cambial zone during the new cells differentiation and maturation. Its particular distribution in the plant induces a dissymetrical distribution of growth stresses capable to modify the orientation of the different axes in the space.
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