Variation in the tracheids length and macrostructural parameters of Douglas fir wood with developed reaction tissue
Journal Title: Annals of WULS, Forestry and Wood Technology; Zeszyty naukowe SGGW - Year 2015, Vol 92, Issue
Abstract
The subject of research was comparison of macrostructural parameters and the length of tracheids in Douglas fir wood with developed reaction tissue and opposite tissue. Macroscopic tests facilitated determination of the width of annual rings and the share of latewood in both tissues. Reaction wood was characterised by wider annual rings and the share of latewood which in the majority of annual rings occupied from 1/2 to 2/3 of their width. Radial variability of the tracheids length along the south radius, in whose area reaction tissue was created, was somewhat different than on the opposite side of the core. In this case, the measured parameter demonstrated large fluctuations; while in the case of opposite wood the tracheids length visibly increased in the first a dozen or so annual rings and them stabilised to some extent and all the way to the circumference. The lengths of tracheids, measured in annual rings of compression wood, were approx. 25% shorter than in the case of tracheids created in the same vegetative periods, but located on the opposite side of the core.
Authors and Affiliations
Magdalena Czajka, Ewa FABISIAK
Keywords
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