SHRINKAGE OF THE GELATINOUS LAYER OF POPLAR AND BEECH TENSION WOOD

Shrinkage of the Gelatinous Layer of Poplar and Beech Tension Wood

On the detachment of gelatinous layer in tension wood fiber

The detachment of gelatinous layer (G-layer), often observed on microtome cross sections, leads some authors believe that G-layer cannot act as the driving force of longitudinal shrinkage in tension wood. The aim of this study was to observe the detachment of G-layer along fibres. Green wood block was cut transversely into two samples. One sample was kept in water and the other ovendried. One f...

the effect of tension wood formation on the anatomical characteristics and gelatinous layer formation in the fibers of poplar (p. nigra)

in this research, the effect of tension wood formation in populus nigra on its anatomical characteristics was studied. vessel element and ray frequency (n/mm²), vessel diameter and ray dimensions were measured in both normal and tension wood. furthermore, the formation of gelatinous layer (g-layer) in the fibers of tension wood was studied. the results showed that the vessel proportion and diam...

Precautions for the structural analysis of the gelatinous layer in tension wood

Origins of abnormal behaviors of gelatinous layer in tension wood fiber - A micromechanical approach

The mechanism responsible for unusual mechanical properties of tension wood gelatinous fiber (Gfiber) was investigated. We discussed origins of high tensile growth stress, high drying shrinkage, and rapid increase of Young’s modulus due to drying, in association with microscopic structure of gelatinous layer (G-layer). Anatomical, crystallographic, and micromechanical approaches were employed. ...