Zur Entwicklung der Faserzellänge während des Jugendwachstums bei Cedrela odorata L.

Abstract

Variation of fibre cell length during the juvenile growth period was examined in samples of 5 different trees of Cedrela odorata . In every case — samples from trees of two different plantations in southern Ghana and different tree heights — it could be checked, that the juvenile cambium produced shorter fibre length. The yearly increment of the fibre cell length was decreasing up to an age of 12—18 years. Initial length of the fibre cells and their increment are varying between the individuals. The development of fibre length during the juvenile growth period is represented by the function y = a + b log x. In the adult growth the variation of fibre length seems to be influenced by exogen factors. The wood showed a clear growth ring structure; nevertheless the fibre length in the late zones was only and not in every sample little longer than in the early zones of the growth rings.