A Study of Lumen Diameter Variation along the Longitudinal Axis of Wood Vessels in Quercus Rubra Using Cinematography

Abstract

The variation in lumen diameter along individual vessels of Quercus rubra was determined from einernatographie analysis of the wood. The between-ring differences in vessel diameter were very highly significant but they were not related to the age of the cambium. The mean lumen diameter values of earlywood vessels for rings ranged from 234 to 254 µm. The differences in the diameters of vessels within rings were also very highly signifieant. The variation in diameter along the longitudinal axis of vessels was very highly significant but it was not closely related to distance along the vessels (r2 = 15 %). However, the diameter variation along this axis differed in (a) rings and (b) vessels within rings.