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Breeding Systems and Genetic Diversity in Acacia auriculiformis and A. crassicarpa
G. F. Moran, O. Muona and J. C. Bell
Vol. 21, No. 3 (Sep., 1989), pp. 250-256
Published by: Association for Tropical Biology and Conservation
Stable URL: http://www.jstor.org/stable/2388652
Page Count: 7
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The mating system and levels of genetic diversity in populations of two tropical species, Acacia crassicarpa Cunn. ex Benth. and Acacia auriculiformis Cunn. ex Benth. from natural riverine forests and open savannahs in Australia and Papua New Guinea were examined using isozyme markers. Levels of genetic diversity were generally lower than in either conifers or eucalypts, and the degree of population differentiation higher. The findings suggest that these acacias may have smaller effective population sizes than have been found in many other trees. Both species were found to have high levels of outcrossing with little variation in the outcrossing rate between populations.
Biotropica © 1989 Association for Tropical Biology and Conservation