Variation in fiber morphology of Mahang Gajah (Macarangga gigantea) according to sapwood and heartwood and different height levels / Nor Hashilah Abd Halim

The study of fiber morphology of Mahang Gajah are carried out based on TAPPI Standard. The objectives of this study is to determine the characteristic of fiber at different portion of tree. It is between sapwood and heartwood from three different height level; DBH, middle and top. Fiber length for sapwood at DBH level are longer(2.0023mm) and the less is from heartwood (1.5561mm) at top. The cell wall thicknesses of the fiber are between 7.671µm for sapwood and 7.4468 µm for heartwood. Runkle ratio for Sapwood is between 0.9548 to 1.1001 meanwhile runkle ratio for heartwood is between 0.9282 to 0.9506. Felting power for sapwood is between 0.0574 to 0.0613. felting power for heartwood is between 0.0524 to 0.0563. The COS for sapwood is between 47.6161 to 51.4202. COS for heartwood is between 51.2667 to 51.8620.