Big-leaf mahogany: genetics, ecology, and management by Ariel E. Lugo, Julio C. Figueroa Colón, Mildred Alayón

By Ariel E. Lugo, Julio C. Figueroa Colón, Mildred Alayón

Big-Leaf Mahogany is an important advertisement trees species of the tropics. present debate bearing on even if to guard it as an endangered species has been hampered via the inability of whole, definitive medical documentation. This publication stories on very important study at the ecology of big-leaf mahogany, together with genetic diversifications, regeneration, typical distribution styles and the silvicutural and exchange implications for the tree.

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The fact that, under these conditions, virtually all the seeds are outcrossed suggests that selfing is not the favored mode of pollination. Selection may be strong against selfed ovules or fruits with selfed seeds. No studies to date have directly examined the possibility that mahogany might show inbreeding depression, although such genetic effects would be predicted in habitually outcrossing species. The outcrossed mating system of mahogany has important management consequences because isolated trees (such as those left as seed trees after timber extraction) or populations whose densities have been severely reduced might be expected to experience reproductive failures or might produce seeds with low germinability or other evidences of inbreeding depression.

Genetics of Brazil nut (Bertholletia excelsa Humb. : Lecythidaceae). 2. Mating system. Theoretical and Applied Genetics 76:929–932. Ritland, K. 1990. A series of FORTRAN computer programs for estimating plant mating systems. Journal of Heredity 81:235–237. , and Verissimo, A. 1992. Mahogany conservation: status and policy initiatives. Environmental Conservation 19:331–338. W. 1981. A multilocus estimator of mating system parameters in plant populations. Proceedings of the National Academy of Sciences of the United States of America 78:1298–1302.

1976. Breeding of tropical hardwoods: an evaluation of underlying bases, current status, and future prospects. D. E. Gullison and Conservation, eds. J. T. Styles, pp. 43–59. Academic Press, London. S. 1991. Conservation of rare trees in tropical rain forests: a genetic perspective. In Genetics and Conservation of Rare Plants, eds. A. E. Holsinger, pp. 62–71. Oxford University Press, Oxford. L. 1991. Reproductive biology and genetics of tropical trees in relation to conservation and management. In Rain Forest Regeneration and Management, eds.

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