Abstract
species studied and when the measurements were expressed on a leaf-area basis, maximum photosynthesis of sun-grown seedlings was higher than for shade-grown seedlings. The opposite was observed for photosynthesis under limited light and for apparent quantum yield. We also observed a decrease in maximum photosynthesis and an increase in apparent quantum yield when specific leaf area increased, ie when the plants were more shaded. The range of variation in photosynthetic response between full sunlight and full shade made it possible to characterize the photosynthetic plasticity of the species. The results were compared with those obtained for other tropical rain-forest species. They are discussed in terms of photosynthetic and morphological plasticity, shade adaptation, and of the species’ place in tropical rain-forest succession.
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