The diversity study of plant, ecology, palynology and anti-bacteria of Drosera burmanni Vahl in Mueang Surat Thani and Kanchanadit District, Surat Thani Province

Abstract

     The objective of this research was to study diversity of plant, ecology, pollen morphology, and antibacterial of the Burmese sundew (Drosera burmanni Vahl) in Mueang and Kanchanadit District, Surat Thani Province, Least concern in IUCN database. Starting from the survey to collect dry samples for ecology studies on growth and distribution in Surat Thani Province as well as palynology study. The pollen of Burmese sundew was undertaken by the acetolysis method and their pollen morphologies were examined by Light Microscope (LM) and Scanning Electron Microscope (SEM). The result of Important Value Index (IVI) showed the most important plants to be Leucaena leucocepphala (Lam.) de Wit, Melaleuca quinquenervia (Cav.) J.T. Blake. and Elaeis guineensis Jacq, respectively. The Shannon and Wiener, diversity index (H) of trees were 2.43 (Mueang), 3.46 (Kanchanadit) while evenness index was 0.38 (Mueang) and 0.56 (Kanchanadit). The results showed that the pollen of Burmese sundew had four microspores (pollen tetrads), the aperture types are 3-Colpate. The exine sculpturing is acuminate (reticulate type), with a thickness of 1-2 microns. The average pollen size is 35-50 microns. Furthermore, the results showed that the ethanolic extract from Burmese sundew was effective in inhibiting bacteria, Staphylococcus aureus, with a mean inhibition diameter of 10.33 ± 1.15 mm. The results of this study can be used as fundamental data for the conservation and utilization of endemic plants in Surat Thani Province.