Sains Malaysiana 46(12)(2017): 2291–2303
http://dx.doi.org/10.17576/jsm-2017-4612-05
Ciri Morfologi Diagnosis Debunga
Bruguiera, Ceriops, Kandelia dan Rhizophora (Rhizophoraceae)
di Semenanjung Malaysia
(Diagnostic Morphological Characteristics
of Bruguiera, Ceriops, Kandelia and Rhizophora (Rhizophoraceae)
Pollen in Peninsular Malaysia)
NORAINI, T.1*,
AMIRUL-AIMAN,
A.J1,2.,
MOHD-ARRABE,
A.B.1
& NURUL-AINI, C.A.C.3
1Pusat Pengajian
Sains Sekitaran dan Sumber Alam, Fakulti Sains dan Teknologi
Universiti Kebangsaan
Malaysia, 43600 UKM Bangi, Selangor Darul Ehsan, Malaysia
2Jabatan Sains Alam
Sekitar, Fakulti Pengajian Alam Sekitar, Universiti Putra Malaysia
43400 UPM
Serdang, Selangor Darul Ehsan, Malaysia
3Jabatan Sains Tumbuhan,
Kuliyyah Sains, Universiti Islam Antarabangsa Malaysia
Bandar Indera Mahkota,
25200 Kuantan, Pahang Darul Makmur, Malaysia
Diserahkan: 8 Mei
2017/Diterima: 30 Oktober 2017
ABSTRAK
Famili Rhizophoraceae ialah
famili tumbuhan utama di hutan paya bakau dengan 16 genus dan 120
spesies dan di Semenanjung Malaysia terdapat tujuh genus dan 17
spesies. Kajian palinologi masih kurang dijalankan di hutan paya
bakau untuk melihat kepentingan ciri morfologi debunga dan adaptasinya
terhadap persekitaran. Objektif kajian ini ialah untuk menyenaraikan
ciri umum, variasi dan ciri diagnosis morfologi debunga antara spesies
dan genus dalam famili Rhizophoraceae di Semenanjung Malaysia. Kaedah
kajian melibatkan teknik asetolisis, pencerapan di bawah mikroskop
cahaya dan mikroskop imbasan elektron. Keputusan kajian menunjukkan
terdapat dua kelas debunga iaitu tri-zono-kolpat dan tri-zono-kolporat.
Kesemua spesies kajian mempunyai debunga bersaiz kecil (10-25 μm)
dan mempunyai debunga bentuk sferoid kecuali Rhizophora
x lamarckii dengan bentuk subprolat. Dua corak hiasan eksin ditemui
pada genus Bruguiera iaitu skabrat-perforat (B. cylindrica,
B. parviflora. B. hainesii dan B. sexangula) dan psilat-skabrat
(B. gymnorhiza). Genus Ceriops dan Rhizophora
stylosa mempunyai hiasan eksin perforat manakala R. apiculata
dan R. mucronata mempunyai corak eksin perforat-retikulat.
Kekunci dikotomi pengecaman spesies dan genus telah dibina berdasarkan
keputusan kajian. Secara kesimpulan, ciri morfologi debunga mempunyai
nilai taksonomi terutamanya untuk pembezaan dan pengecaman spesies
dan genus bagi famili Rhizophoraceae.
Kata kunci: Debunga; hutan
paya bakau; palinologi; Rhizophoraceae; Semenanjung Malaysia
ABSTRACT
Rhizophoraceae is a plant family
in mangrove forest with approximately 16 genera and 120 species
and seven genera and 17 species are found in Peninsular Malaysia.
Palynology study in mangroves to investigate the importance of pollen
morphological characteristics and adaptation to its environment
is still meagre. The objectives of this study were to list the common
features, variations and diagnostic features of pollen morphology
among species and genera in the Rhizophoraceae family. The methods
involved acetolysis techniques and observation under light and scanning
electron microscopes. The results showed that there are two pollen
classes which are tri-zono-colpate and tri-zono-colporate. All the
species studied have small size (10-25 μm)
and spheroidial shaped pollen except Rhizophora x lamarckii
with subprolate pollen. Two types of exine ornamentation were
found in Bruguiera, i.e. scabrate-perforate (B. cylindrica,
B. parviflora. B. hainesii and B. sexangula) and psilate-scabrate
(B. gymnorhiza). On the other hand, the genus Ceriops
and Rhizophora stylosa have perforate exine ornamentation
and R. apiculata and R. mucronata have exine ornamentation
perforate-reticulate. Dichotomy key for species and genus identification
has been constructed based on the findings. As a conclusion pollen
morphological characteristics have taxonomic value especially for
the genus and species differentiation and identification in the
family Rhizophoraceae.
Keywords: Mangrove forest; palynology; Peninsular Malaysia; pollen;
Rhizophoraceae
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*Pengarang untuk surat-menyurat; email:
ntalip@ukm.edu.my
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