Tracheid Length Variation in Conifers as Related to Distance from Pith
A relationship between tracheid length and distance from pith was found in four coniferous trees. The relationship could be expressed mathematically for each tree without regard to age or level in the trunk, provided that the portion of the bole close to the ground was eliminated. The shortest tracheids were found near the pith; outward from the pith, tracheid length at first increased rapidly, then more slowly and with a tendency to level off. Tracheids near the tree base were shorter than those at higher levels at points equidistant from the pith. Springwood tracheids in white fir were found to be shorter than summerwood tracheids of the same annual ring.
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Document Type: Journal Article
Affiliations: Professor of Wood Technology, New York State College of Forestry, Syracuse
Publication date: 1951-01-01
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