Establishment of modular growth in a tropical tree: Isertia coccinea Vahl. (Rubiaceae)

Author:

Abstract

The developmental architecture of Isertia coccinea Vahl. (Rubiaceae) is described in terms of modular construction. In this paper a module is defined as a determinate shoot terminating in an inflorescence. Isertia coccinea Vahl. is a small tree that conforms to Scarrone’s architectural model. Before flowering, this tree is not modular and consists of an orthotropic trunk bearing rhythmic tiers of orthotropic branches. In a later stage, the lateral complexes branch sympodially as a result of terminal flowering, the whole tree displaying a partly modular stage. Later still, the trunk can terminate in an inflorescence, the tree’s growth thus becoming entirely modular. The partly modular stage can be of long or short duration depending on the environmental conditions. In shaded conditions, this stage is long or indeterminate; in open conditions it can be very short, the entirely modular stage becoming dominant early in the life of the tree.

Publisher

The Royal Society

Subject

Industrial and Manufacturing Engineering,General Agricultural and Biological Sciences,General Business, Management and Accounting,Materials Science (miscellaneous),Business and International Management

Reference8 articles.

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2. Halle F. & Oldeman R. A. A. 1975 An essay on the architecture and dynamics ofgrowth of tropical trees. (156 pages.) Kuala Lumpur: Penerbit University of Malaya.

3. Halle F. Oldeman R. A. A. & Tomlinson P. B. 1978 Tropical trees andforests: an architectural analysis. (441 pages.) Berlin: Springer-Verlag.

4. Kahn S. 1975 Remarques sur l'architecture vegetative dans ses rapports avec la systematique et la biogeographie. Thesis Universite des Sciences et Techniques du Languedoc Montpellier.

5. Some observations on growth, branching behaviour and flowering of teak ( grandis) in relation to light;Nanda K. K.;Ind. For.,1962

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