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All Journal Journal of Tropical Biodiversity and Biotechnology REINWARDTIA
Sedek, Aimi Syazana
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Agriculture, Biological Sciences & Forestry Biochemistry, Genetics & Molecular Biology Education Environmental Science Immunology & microbiology

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Diversity of Zingiber Mill. (Zingiberaceae) in Peninsular Malaysia Including Short Remarks of an Undescribed Taxon Sedek, Aimi Syazana; Mohamad, Salasiah; Yen, Sam Yen
Journal of Tropical Biodiversity and Biotechnology Vol 9, No 3 (2024): September
Publisher : Universitas Gadjah Mada

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.22146/jtbb.93187

Abstract

Zingiber, a notable genus within the Zingiberaceae family, is widely distributed throughout Southeast Asia. It encompasses a total of at least 141 species on a global scale, with 25 native species and 30 known taxa identified specifically in Peninsular Malaysia. Of these known taxa, at least 7 are categorised as threatened, 5 are endemic, and the rest remain unassessed regarding their conservation status. This article provides a comprehensive checklist and taxonomic insights for all native Zingiber in Peninsular Malaysia. Remarkably, from the current fieldwork, the discovery of a peculiar Zingiber plant from the northern part of Peninsular Malaysia holds the potential to contribute additional records within this genus. Initially, this species resembles Z. belumense and Z. purpureum in their inflorescence colouration, displaying shades ranging from brownish maroon to dark purple with green bracts, but this newly proposed taxon stands out due to its combination of distinctive traits. An intriguing observation notes the presence of red sap when the leafy shoots were cut and needs further corroboration. This article establishes a provisional taxonomic designation for the newly discovered species, Zingiber sp. (Bahangense130). A comprehensive description supported by robust molecular phylogenetic evidence is currently underway, while brief notes and illustrative images of the proposed taxon are provided within this paper.
PRELIMINARY STUDY OF THE POLLEN MORPHOLOGY OF MALAYSIAN ZINGIBERACEAE (TRIBE ALPINIEAE) AND THE TAXONOMIC RELATIONSHIP Mohamad, Salasiah; Kalu, Meekiong; Sedek, Aimi Syazana
REINWARDTIA Vol 22, No 2 (2023): Volume 22, No 2 (2023): Reinwardtia
Publisher : Research Center for Biology

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.55981/reinwardtia.2023.4538

Abstract

The family Zingiberaceae forms an important herbaceous layer in the tropical forests of Malaysia. From a phylogenetic point of view, certain genera of the problematic tribe Alpinieae are non-monophyletic and in need of more taxonomic evidence to support the classification. This study demonstrates how the palynological data could correlate with the proposed phylogenetic data, using representatives from the Malaysian species. The pollen morphology of 21 species from the tribe Alpinieae was investigated. Parameters including polarity, symmetry, shape, size, apertures, exine ornamentation, size of spine, type of spine apex, spine density, and distance between spine were analysed. The results demonstrated that the studied species were conveniently divided into two major groups based on the exine sculpturing of the spheroidal pollens, either psilate as in Etlingera and Hornstedtia, or echinate as in Alpinia, Conamomum, Meistera, Plagiostachys, Sundamomum, and Sulettaria. Hence, as far as the study is concerned, the main sculpturing is considered useful to generally distinguish the genera in the tribe.
Co-Authors MEEKIONG KALU, MEEKIONG Mohamad, Salasiah Yen, Sam Yen