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Taxonomic and physioecological significance of the floral surface micromorphology of Vanda helvola and vanda dearei (orchidaceae)

The Vanda orchid is appreciated for its large, beautiful, scented flowers. Anatomical enumeration of the most compatible Vanda species holds interesting and under-investigated aspects. We conducted an in-depth investigation into the floral-surface micromorphology of V. helvola and V. dearei, and ass...

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Main Authors: Besi, Edward Entalai, Ling, Swee Chie, Rusea, Go
Format: Article
Published: Penerbit UMT 2021
Online Access:http://psasir.upm.edu.my/id/eprint/95290/
https://jssm.umt.edu.my/?page_id=4854
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spelling my.upm.eprints.952902023-04-11T08:15:57Z http://psasir.upm.edu.my/id/eprint/95290/ Taxonomic and physioecological significance of the floral surface micromorphology of Vanda helvola and vanda dearei (orchidaceae) Besi, Edward Entalai Ling, Swee Chie Rusea, Go The Vanda orchid is appreciated for its large, beautiful, scented flowers. Anatomical enumeration of the most compatible Vanda species holds interesting and under-investigated aspects. We conducted an in-depth investigation into the floral-surface micromorphology of V. helvola and V. dearei, and assessed the significance in taxonomic delimitation using scanning electron microscopy (SEM) to feasibly answer questions on the reported dubious origins of certain Vanda species and hybrids. Floral trichomes, including papillae structures, stomata, epicuticular ornamentation and waxes, were enumerated and compared between the selected species. Findings based on the photomicrographs revealed that V. helvola and V. dearei were comparable based on the diversity and dissemination of trichomes, stomata and epicuticular ornamentation. Noteworthy was the heterogeneous occurrence of distinguishing barrel-shaped glandular trichomes with aperture, which might also function as nectaries, and branched glandular and biseriate trichomes on the labellum of V. helvola, but was absent in V. dearei. In contrast, an aggregation of conical papillae occurred on the spur of V. dearei, but lacking in V. helvola. We also employed SEM observations to understand the role of surface microstructures in physio-ecological functions. The glandular trichomes and stomata were presumed to be secretory structures for the unique scents of V. helvola and V. dearei. Penerbit UMT 2021 Article PeerReviewed Besi, Edward Entalai and Ling, Swee Chie and Rusea, Go (2021) Taxonomic and physioecological significance of the floral surface micromorphology of Vanda helvola and vanda dearei (orchidaceae). Journal of Sustainability Science and Management, 16 (5). 22 - 34. ISSN 1823-8556; ESSN: 2672-7226 https://jssm.umt.edu.my/?page_id=4854 10.46754/jssm.2021.07.002
institution Universiti Putra Malaysia
building UPM Library
collection Institutional Repository
continent Asia
country Malaysia
content_provider Universiti Putra Malaysia
content_source UPM Institutional Repository
url_provider http://psasir.upm.edu.my/
description The Vanda orchid is appreciated for its large, beautiful, scented flowers. Anatomical enumeration of the most compatible Vanda species holds interesting and under-investigated aspects. We conducted an in-depth investigation into the floral-surface micromorphology of V. helvola and V. dearei, and assessed the significance in taxonomic delimitation using scanning electron microscopy (SEM) to feasibly answer questions on the reported dubious origins of certain Vanda species and hybrids. Floral trichomes, including papillae structures, stomata, epicuticular ornamentation and waxes, were enumerated and compared between the selected species. Findings based on the photomicrographs revealed that V. helvola and V. dearei were comparable based on the diversity and dissemination of trichomes, stomata and epicuticular ornamentation. Noteworthy was the heterogeneous occurrence of distinguishing barrel-shaped glandular trichomes with aperture, which might also function as nectaries, and branched glandular and biseriate trichomes on the labellum of V. helvola, but was absent in V. dearei. In contrast, an aggregation of conical papillae occurred on the spur of V. dearei, but lacking in V. helvola. We also employed SEM observations to understand the role of surface microstructures in physio-ecological functions. The glandular trichomes and stomata were presumed to be secretory structures for the unique scents of V. helvola and V. dearei.
format Article
author Besi, Edward Entalai
Ling, Swee Chie
Rusea, Go
spellingShingle Besi, Edward Entalai
Ling, Swee Chie
Rusea, Go
Taxonomic and physioecological significance of the floral surface micromorphology of Vanda helvola and vanda dearei (orchidaceae)
author_facet Besi, Edward Entalai
Ling, Swee Chie
Rusea, Go
author_sort Besi, Edward Entalai
title Taxonomic and physioecological significance of the floral surface micromorphology of Vanda helvola and vanda dearei (orchidaceae)
title_short Taxonomic and physioecological significance of the floral surface micromorphology of Vanda helvola and vanda dearei (orchidaceae)
title_full Taxonomic and physioecological significance of the floral surface micromorphology of Vanda helvola and vanda dearei (orchidaceae)
title_fullStr Taxonomic and physioecological significance of the floral surface micromorphology of Vanda helvola and vanda dearei (orchidaceae)
title_full_unstemmed Taxonomic and physioecological significance of the floral surface micromorphology of Vanda helvola and vanda dearei (orchidaceae)
title_sort taxonomic and physioecological significance of the floral surface micromorphology of vanda helvola and vanda dearei (orchidaceae)
publisher Penerbit UMT
publishDate 2021
url http://psasir.upm.edu.my/id/eprint/95290/
https://jssm.umt.edu.my/?page_id=4854
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score 13.211869

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