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Patterns of genetic diversity and biogeographical history of the tropical wetland tree, Pterocarpus officinalis (Jacq.), in the Caribbean basin by E. Rivera‐Ocasio; T. M. Aide; W. O. McMillan is a Biochemistry, Genetics and Molecular Biology article available to read on EtoBox.

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## Abstract Studies examining intraspecific variation in plant species with widespread distributions and disjunct populations have mainly concentrated on temperate species. Here, we determined 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. Nonetheless, 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 relationships among populations. In addition, our analysis of __P. officinalis__ revealed striking differences in the levels of AFLP variation among the eight populations sampled. In general, Caribbean populations had lo

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Author

E. Rivera‐Ocasio; T. M. Aide; W. O. McMillan

Publisher

John Wiley and Sons; Wiley (Blackwell Publishing); Blackwell Publishing Inc.; Wiley; Research Square (ISSN 0962-1083)

Published

2002

Language

EN

Field

Biochemistry, Genetics and Molecular Biology (Life Sciences)