Premium
GROWTH ECCENTRICITY AND REACTION ANATOMY IN BRANCHWOOD OF PSEUDOWINTERA COLORATA
Author(s) -
Kučera Ladislav J.,
Philipson William R.
Publication year - 1978
Publication title -
american journal of botany
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 1.218
H-Index - 151
eISSN - 1537-2197
pISSN - 0002-9122
DOI - 10.1002/j.1537-2197.1978.tb06115.x
Subject(s) - biology , eccentricity (behavior) , tracheid , anatomy , botany , xylem , political science , law
The present work deals with growth eccentricity and reaction anatomy in horizontal branches of Pseudowintera colorata (Raoul) Dandy. Growth promotion is distinct and occurs on the lower (abaxial) side of inclined branches in the manner common to gymnosperms. Neither compression wood nor tension wood was found either on the upper or on the lower side of the investigated branches. The cells of the wood to the lower side show some differences from those of the upper side. The lower‐side tracheids are longer, wider, possess thicker walls and have a higher microfibril angle than those of the upper side. The lower‐side rays are less high but wider (because of a greater number of larger cells) than those of the upper side.