Journal ArticleDOI
Occurrence of Reaction Wood in Branches of Dicotyledons and Its Role in Tree Architecture
TLDR
In this article, the lateral branch and young leader axes of 122 species of dicotyledonous trees in 46 families, displaying a variety of architectural models, were surveyed for presence of reaction wood as defined by gelatinous wood fibers (G-fibers).Abstract:
Lateral branch and young leader axes of 122 species of dicotyledonous trees in 46 families, displaying a variety of architectural models, were surveyed for presence of reaction wood (RW) as defined by gelatinous wood fibers (G-fibers). Distinct G-fibers occurred in 56 species, mostly in the upper half of the axis. There was a positive correlation between changes in axis orientation and position of the RW in 22, or one-fourth, of the species showing changes in branch orientation. Many species show an increase in branch angle; i.e., branches become more horizontal with age. Among these, Hevea (Rauh's architectural model), Endospermum, and Terminalia (both Aubreville's model) first produce RW on the lower side near the pith and later on the upper side. The erection of a lateral branch, i.e., a decrease in branch angle, to form the new leader in Koriba's model is correlated with RW on the upper side of the branch in Hura, but not in other species with this model. Many species with Troll's model, in which the ...read more
Citations
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Journal ArticleDOI
Tensional stress generation in gelatinous fibres: a review and possible mechanism based on cell-wall structure and composition
TL;DR: This review presents a model of gelatinous-fibre organization and stresses the unique character of the gelatinous layer as a separate type of cell-wall layer, different from either primary or secondary wall layers.
Journal ArticleDOI
Mesoporosity as a new parameter for understanding tension stress generation in trees
Shan-Shan Chang,Shan-Shan Chang,Bruno Clair,Julien Ruelle,Jacques Beauchêne,Francesco Di Renzo,Françoise Quignard,Guang-Jie Zhao,Hiroyuki Yamamoto,Joseph Gril +9 more
TL;DR: Measurements show that mesoporosity is high in tension wood with a typical thick G-layer while it is much less with a thinner G- layer, sometimes no more than normal wood.
Journal ArticleDOI
Phylogenetics and the evolution of major structural characters in the giant genus Euphorbia L. (Euphorbiaceae).
James W. Horn,Benjamin W. van Ee,Jeffery J. Morawetz,Ricarda Riina,Ricarda Riina,Victor W. Steinmann,Paul E. Berry,Kenneth J. Wurdack +7 more
TL;DR: The evolution of growth form and inflorescence position are significantly correlated, and a pathway of evolutionary transitions is supported that has implications for the evolution of Euphorbia xerophytes of large stature.
References
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Book
Tropical trees and forests: An architectural analysis
TL;DR: In this paper, the authors present an overview of the development of the tree in the Tropics and its relationship with tree models. But they do not discuss the relationship between tree morphology and tree growth.
Tropical trees and forests: an architectural analysis.
TL;DR: In this paper, the authors present an overview of the development of the tree in the Tropics and its relationship with tree models. But they do not discuss the relationship between tree morphology and tree growth.
Adaptive geometry of trees.
TL;DR: Through use of the models Professor Horn has devised, plant ecologists, foresters, and botanists will be able to predict the growth and productivity of a forest, the invading and senile species in a Forest, the effect of shade tolerance on forest succession, and similar questions.
Book
The adaptive geometry of trees
TL;DR: In this paper, the authors developed a model to predict the growth and productivity of a forest, the invading and senile species in a forest and the effect of shade tolerance on forest succession.
Journal ArticleDOI
Tree structures: deducing the principle of mechanical design.
TL;DR: A detailed study of the morphometry of three oak, one poplar, one cherry, and one white pine corroborates the stationarity of these branching structures and fits the elastically similar model.
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Physical and Chemical Properties of the Gelatinous Layer in Tension Wood Fibres of Aspen (Populus tremula L.)
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