Sains Malaysiana 38(4)(2009): 589–593

Nilai Taksonomi Trikom dalam Genus Neesia (Bombacaceae)

(Taxonomic Value of Trichome in Neesia (Bombacaceae)

Noraini Talip* & Salmizawati Mohamad Salim

Pusat Pengajian Sains Sekitaran dan Sumber Alam, Fakulti Sains dan Teknologi

43600 UKM, Bangi, Selangor D E, Malaysia

Richard Chung Cheng Kong

Botany and Herbarium Unit, Division Biodiversity and Environment

Forest Research Institute of Malaysia (FRIM)

52109 Kepong, Selangor D.E, Malaysia

Received: 14 August 2008 / Accepted: 1 December 2008

ABSTRAK

Kajian kehadiran dan jenis trikom telah dijalankan ke atas lima spesies Neesia daripada famili Bombacaceae. Hasil menunjukkan bahawa kehadiran trikom jenis dendritik, berkelenjar, ringkas unisel, peltat sisik dan stelat dalam genus Neesia. Kehadiran trikom stelat boleh dijadikan ciri diagnosis spesies Neesia malayana, trikom peltat sisik bagi Neesia altissima dan trikom ringkas unisel bagi Neesia piluliflora. Trikom berkelenjar merupakan ciri sepunya dalam semua spesies yang dikaji. Sementara kehadiran trikom dendritik tidak mempunyai nilai taksonomi yang begitu signifikan tetapi masih boleh digunakan untuk membezakan spesies. Kesimpulannya hasil kajian ini menunjukkan bahawa kehadiran trikom pada lamina daun Neesia mempunyai nilai taksonomi terutamanya di peringkat spesies.

Kata kunci: Anatomi daun; bombacaceae; indumentum; mikromorfologi daun

ABSTRACT

A study was undertaken on the presence and trichomes types in five Neesia species of Bombacaceae. Results showed that the presence of dendritic, glandular, simple unicellar, peltate scale and stelate trichomes in Neesia. The presence of stelate trichome can be used as a diagnostic character in Neesia malayana, peltate scale trichomes in Neesia altissima and simple unicellular trichomes in Neesia piliuliflora. The presence of glandular trichomes is a common character in all species studied. Dendritic trichomes has little taxonomic value but yet can be used in distinguishing species. As a conclusion the presence of trichomes in leaf lamina in Neesia has taxonomic value especially at the species level.

Keywords: Bombacaceae; indumentum; leaf anatomy; leaf micromorphology

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*Corresponding author; email: ntalip@ukm.my