Growth-rates of some West African forest-tree seedlings in shade
1972
Okali, D.U.U.
The growth of seedlings of three West African forest-tree species; Ceiba pentandra (L.) Gaertn., Terminalia ivorensis A. Chev., and Chlorophora excelsa (Welw.) Benth. was compared with that of Helianthus annuus in shade to complement an earlier study of seedlings in full daylight. Growth-analysis techniques were used to show that there is no great disparity between the woody plants and Helianthus in adaptation to light since both require high light intensities (above full daylight under the experimental conditions) for maximum growth. It was concluded from this that the woody habit, rather than differential adaptation to light, is mainly responsible for the lower growth-rates of the woody plants when compared with Helianthus. The high light requirement of the tree seedlings is consistent with their role as pioneers in regeneration of the natural West African forest.
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