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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
Diserahkan: 14 Ogos 2008 / Diterima: 1 Disember 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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