Chan, Yoke Mui and Tnah, Lee Hong and Lee, Soon Leong and Bhassu, Subha and Lee, Chai Ting and Chua, Lillian Swee Lian (2018) Limited dispersal and geographic barriers cause population differentiation and structuring in Begonia maxwelliana at both large and small scales. Plant Ecology & Diversity, 11 (1). pp. 69-83. ISSN 1755-0874, DOI https://doi.org/10.1080/17550874.2018.1471625.
Full text not available from this repository.Abstract
Background: Genetic divergence is one of the key processes in speciation. In the Begoniaceae, genetic divergence caused by limited gene flow may explain its high species diversity and endemicity. This hypothesis has been supported by past genetic work but there is a lack of empirical studies on the causes of limited gene flow. Aim: To identify the causes of limited gene flow in Begonia. Methods: We examined the genetic structure among the populations of Begonia maxwelliana at the macro-and micro-spatial scales using microsatellites, measured seed dispersal range and observed flowering phenology. Results: Population differentiation and structuring were detected at both the macro-and micro-scales. Dispersal range was short, and all populations showed similar reproductive behaviour. Conclusions: The strong population differentiation and structuring among the populations studied imply that they are evolutionarily significant units and possible candidates for speciation. Geographical barriers and limited seed dispersal restrict gene flow in the populations, and these factors may be responsible for the rapid speciation and large diversity in the family.
| Item Type: | Article |
|---|---|
| Funders: | Ministry of Natural Resources and Environment under the 10th and 11th Malaysian Plans [SPPII No. P23085100010021], [P23085100018003], University of Malaya [Postgraduate Research Fund [PG107-2013B]] |
| Uncontrolled Keywords: | Genetic divergence; Malaysia; microsatellite; phenology; seed dispersal; speciation; tropical |
| Subjects: | Q Science > Q Science (General) Q Science > QH Natural history |
| Divisions: | Faculty of Science > Institute of Biological Sciences |
| Depositing User: | Ms. Juhaida Abd Rahim |
| Date Deposited: | 06 Sep 2019 03:52 |
| Last Modified: | 06 Sep 2019 03:52 |
| URI: | http://eprints.um.edu.my/id/eprint/22272 |
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