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Molecular Ecology (2002) 11, 675683 2002 Blackwell Science Ltd
 

Summary: Molecular Ecology (2002) 11, 675683
2002 Blackwell Science Ltd
Blackwell Science Ltd
Patterns of genetic diversity and biogeographical history
of the tropical wetland tree,Pterocarpus officinalis(Jacq.), in
the Caribbean basin
E. RIVERA-OCASIO, T. M. AIDE and W. O. MC MILLAN
PO Box 23360, Department of Biology, University of Puerto Rico-Rio Piedras, San Juan, Puerto Rico 00931-3360
Abstract
Studies examining intraspecific variation in plant species with widespread distributions
and disjunct populations have mainly concentrated on temperate species. Here, we deter-
mined the genetic structure of a broadly distributed wetland tropical tree, Pterocarpus
officinalis (Jacq.), from eight Neotropical populations using amplified length fragment
polymorphisms (AFLP). AFLPs proved highly variable with almost half (48%) of the
genetic variation at these loci occurring among individuals within populations. Nonethe-
less, there was a strong geographical pattern in the distribution of AFLP variation within
P. officinalis. Caribbean and continental populations fell into two well-defined genetic
clusters supported by the presence of a number of unique AFLP bands. Within these two
regions, there were also strong genetic differences among populations, caused mainly by
frequency differences in AFLP bands, making it difficult to determine the evolutionary

  

Source: Aide, Mitchell - Department of Biology, Universidad de Puerto Rico - Rio Piedras

 

Collections: Environmental Sciences and Ecology