Molecular Phylogenetics of Alpinia (Zingiberaceae) in Peninsular Malaysia / Natasha Binti Jamil

Jamil, Natasha (2014) Molecular Phylogenetics of Alpinia (Zingiberaceae) in Peninsular Malaysia / Natasha Binti Jamil. Masters thesis, University of Malaya.

[img]
Preview
PDF
Download (143Kb) | Preview
    [img]
    Preview
    PDF
    Download (132Kb) | Preview
      [img]
      Preview
      PDF
      Download (231Kb) | Preview
        [img]
        Preview
        PDF
        Download (131Kb) | Preview
          [img]
          Preview
          PDF
          Download (115Kb) | Preview
            [img]
            Preview
            PDF
            Download (364Kb) | Preview
              [img]
              Preview
              PDF
              Download (1016Kb) | Preview
                [img]
                Preview
                PDF
                Download (620Kb) | Preview
                  [img]
                  Preview
                  PDF
                  Download (217Kb) | Preview
                    [img]
                    Preview
                    PDF
                    Download (4Mb) | Preview
                      [img]
                      Preview
                      PDF
                      Download (198Kb) | Preview
                        [img]
                        Preview
                        PDF
                        Download (7Kb) | Preview
                          [img]
                          Preview
                          PDF
                          Download (80Kb) | Preview
                            [img]
                            Preview
                            PDF
                            Download (241Kb) | Preview
                              [img]
                              Preview
                              PDF (Full Text)
                              Download (172Kb) | Preview

                                Abstract

                                72 taxa of the genus Alpinia from Peninsular Malaysia representing section Alpinia and section Allughas (Smith, 1990) were collected and sequenced with two primers namely nuclear ribosomal DNA of internal transcribed spacer region (ITS) and partial chloroplast maturase K gene (matK) gene. Both ITS and matK trees in this study reaffirm the polyphyletic nature of the Alpinia species and revealed that the grouping of the Alpinia species from Peninsular Malaysia reflects some degree of similarity with that of Rangsiruji et al. 2000b and Kress’s et al. 2005 phylogeny, and in most part, incongruent with Smith’s 1990 infrageneric classification. This study reaffirms that A. oxymitra is closely related to either Clade IV (the Zerumbet clade) or Clade V (the Eubractea clade) of Kress et al. 2005 phylogeny. Based on morphology and the phylogenetic trees, newly described A. suriana is closely related with A. rafflesiana, thus suggests possible hybridisation between A. rafflesiana and A.javanica. In addition, it is clear from the internal transcribed spacer (ITS) and maturase K (matK) phylogenetic results in this study that the Rafflesiana clade (represented by subclade VIa and subclade VIb -Fig. 3.3 and Fig. 3.4) is distinct as the species that belong to the section Allughas subsection Allughas sensu Smith (1990) formed a natural grouping; comprising only of the Peninsular Malaysian Alpinia species. Interestingly, A. scabra (section Alpinia subsection Presleia, Smith 1990) is a sister taxa to the Rafflesiana clade, strongly supported by the molecular analyses of both ITS and matK consensus trees. However, relationship of some Alpinia species from the ITS data within the Rafflesiana clade varies from that obtained from matK data. Incongruence among the ITS and matK data suggests possible hybridisation or introgression between closely related species or the species may have shared ancestral polymorphisms.

                                Item Type: Thesis (Masters)
                                Additional Information: Dissertation (M.A) - Institute of Biological Science Faculty of Science, University of Malaya, 2014.
                                Uncontrolled Keywords: Molecular Phylogenetics of Alpinia
                                Subjects: Q Science > Q Science (General)
                                Divisions: Faculty of Science
                                Depositing User: Mrs Nur Aqilah Paing
                                Date Deposited: 12 Mar 2015 15:04
                                Last Modified: 12 Mar 2015 15:04
                                URI: http://studentsrepo.um.edu.my/id/eprint/4935

                                Actions (For repository staff only : Login required)

                                View Item