A protocol for floral odour analyses of schismatoglottis calyptrata (Araceae:schismatoglottideae)

Nur Adilah, Binti Muhammad Arif (2012) A protocol for floral odour analyses of schismatoglottis calyptrata (Araceae:schismatoglottideae). [Final Year Project Report] (Unpublished)

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The Schismatoglottis calyptrata complex comprises about 30 species of herbs originating from the Asian humid tropics belonging to the plant family Araceae. Inflorescences of Schismatoglottis flower by a series of functional ‘phases’, beginning with female flower activity (the ‘pistillate phase’) and ending with pollen release (‘staminate phase’), with these phases separated by a transitional period. The production of primary floral attractants was in the form of powerful esteric-like odours. Several species of the Calyptrata complex frequently occur together in a habitat, with the different species often flowering at the same time yet nowhere are there recorded interspecific hybrids. It thus seems very probable that aspects of the species’ pollination maintain distinct lineages of the various species, even in situations of multi-species flowering. A protocol for floral odour analyses of S. calyptrata was established in this study. The main compound of the floral scent trapped was examined by using gas-chromatography mass-spectrometry (GCMS) techniques with the aim of identifying the compounds emitted. Four compounds were identified and characterised, representing 73.74-93.16% of the total GC area. The major volatile representing about 50% was the Methyl 3-methyl-3-butenoate. This compound was found in higher concentrations from female anthesis of S. Calyptrata (F3). Generally, a significant difference in the composition of volatile compounds between the compounds from the same antheses and from different geographic regions was recorded. The results suggest that climatic factors, latitude and longitude affect the formation of volatiles.

Item Type: Final Year Project Report
Additional Information: Project Report (B.Sc.) -- Universiti Malaysia Sarawak, 2012.
Uncontrolled Keywords: Araceae, floral odour, schismatoglottis calyptrata (Araceae:schismatoglottideae), Universiti Malaysia Sarawak, UNIMAS, university, university, education, IPTA, research, Sarawak, Malaysia, kuching, samarahan, borneo, undergraduate
Subjects: Q Science > Q Science (General)
S Agriculture > SB Plant culture
Divisions: Academic Faculties, Institutes and Centres > Faculty of Resource Science and Technology
Faculties, Institutes, Centres > Faculty of Resource Science and Technology
Depositing User: Karen Kornalius
Date Deposited: 06 Jan 2015 01:32
Last Modified: 14 Nov 2023 08:25
URI: http://ir.unimas.my/id/eprint/6039

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