Sains
Malaysiana 47(4)(2018): 645-649
http://dx.doi.org/10.17576/jsm-2018-4704-01
Anatomi Rizom dan Stip Genus Pleocnemia Presl (Tectariaceae) di Semenanjung Malaysia
(Anatomy
of Rhizomes and Stipes Genus Pleocnemia Presl (Tectariaceae) in Peninsular
Malaysia)
MAIDEEN,
H.,* SYAZWANI, B., NIK NORHAZRINA, N.M.K., NUR-ALIAH, M.K., NORAINI,
T. & NUR FARHANIM, I.
School of Environmental and Natural
Resource Sciences Faculty of Science and Technology, Universiti Kebangsaan Malaysia, 43600
UKM Bangi, Selangor Darul Ehsan, Malaysia
Diserahkan: 15
Jun 2017/Diterima: 13 Oktober 2017
ABSTRAK
Kajian anatomi rizom dan stip
telah dijalankan
ke atas empat
spesies Pleocnemia yang terdapat di
Semenanjung Malaysia iaitu
P. irregularis, P. conjugata, P. hemiteliiformis
dan
P. olivacea untuk mengkaji variasi ciri anatomi yang terdapat pada rizom dan stip ini. Kajian ini melibatkan keratan rentas stip dan rizom dengan menggunakan mikrotom gelongsor.
Ciri anatomi stip
seperti bentuk luaran, corak kehadiran
sel sklerenkima
di bawah epidermis, jenis dan bentuk stel
dan ciri anatomi rizom seperti
kehadiran sel
rembes tanin dan
kehadiran serta
jenis trikom pada sesetengah spesies boleh digunakan untuk pengecaman spesies. Ciri sepunya bagi spesies Pleocnemia yang dikaji ialah kehadiran sel sklerenkima mengelilingi stel dan di bawah lapisan
sel epidermis, stel
jenis kompleks serta stel bagi
kesemua spesies
kajian berbentuk protostel primitif (bulat). Antara ciri diagnosis
yang ditemui dalam
kajian
ini ialah bentuk luaran stip, bilangan lapisan skelerenkima di bawah epidermis, kehadiran sel
rembes
tanin bagi spesies P. irregularis
dan P. hemiteliiformis serta kehadiran jenis trikom yang berbeza dalam keempat-empat spesies. Ciri diagnosis ini adalah ciri yang
baik untuk pengecaman spesies kajian. Keputusan kajian ini menunjukkan bahawa ciri anatomi stip
dan rizom mempunyai nilai taksonomi dalam genus Pleocnemia dan boleh digunakan
sebagai data sokongan
untuk pengecaman dan pembezaan spesies.
Kata kunci: Anatomi;
Pleocnemia; protostel primitif; rizom; Semenanjung Malaysia
ABSTRACT
Anatomical studies
of the stipe
and rhizome were conducted on four Pleocnemia species recorded
in Peninsular Malaysia, namely P. irregularis, P. conjugata, P. hemiteliiformis and P. olivacea to investigate the anatomical variations of the stipe and
rhizome. Cross-section of the stipe
and rhizome was done using
sliding microtome. Stipe anatomical characteristics such as stipe outline, pattern of schlerenchyma cells under epidermal layers, stele types and shapes
and rhizome anatomical
characteristics such as presence of tanniferous
idioblast cells, presence and types of
trichomes were useful for species identification. The shared
characters in all the Pleocnemia species studied were the presence of schlerenchyma cells below
the epidermal layers
and surrounding the
steles, complex steles
shape and primitive protestele (round). Diagnostic
characteristics found in this study were stipe outline, number of
schlerenchyma cell layers below the epidermal cells, presence
of tanniferous idioblast
cells in P. irregularis and P.
hemiteliiformis and the different types of trichomes in all the four species.
These diagnostic characters were useful for identification of the studied
species. The present
study showed that stipe and rhizome anatomical characteristics
have taxonomic value in Pleocnemia and
are useful support data for species differentiation
and identification.
Keywords: Anatomy; Peninsular Malaysia; Pleocnemia; primitive protostele; rhizome
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*Pengarang untuk
surat-menyurat; email: aliahkhaduwi@gmail.com
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