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https://ptsldigital.ukm.my/jspui/handle/123456789/463384Full metadata record
| DC Field | Value | Language |
|---|---|---|
| dc.contributor.advisor | Noraini Talip, Prof Madya Dr. | - |
| dc.contributor.author | Mohd Arrabe' Ahmad Baei (P57428) | - |
| dc.date.accessioned | 2023-09-25T09:23:49Z | - |
| dc.date.available | 2023-09-25T09:23:49Z | - |
| dc.date.issued | 2014-08-23 | - |
| dc.identifier.other | ukmvital:80449 | - |
| dc.identifier.uri | https://ptsldigital.ukm.my/jspui/handle/123456789/463384 | - |
| dc.description | Penyesuaian morfologi debunga tumbuhan yang hidup di hutan paya bakau terhadap persekitaran masih kurang diketahui termasuk tiga famili dominan dan ekslusif di hutan paya bakau iaitu Rhizophoraceae, vicenniaceae dan Sonneratiaceae.Tumbuhan ini mampu beradaptasi dengan persekitaran ekstrem melalui pengubahsuaian bahagian akar, batang, daun, bunga atau buah. Kajian taksonomi debunga ke atas tiga famili ini dijalankan bertujuan untuk menyenaraikan ciri umum dan variasi morfologi debunga antara spesies, genus dan famili yang dikaji. Kajian ini juga bertujuan untuk menilai kepentingan taksonomi ciri morfologi debunga serta perkaitannya dengan persekitaran dan agen pendebungaan. Sebanyak 19 takson daripada famili Rhizophoraceae, Avicenniaceae dan Sonneratiaceae di Semenanjung Malaysia telah dipilih dalam kajian ini. Pencerapan morfologi debunga telah dilakukan di bawah mikroskop cahaya dan mikroskop imbasan elektron setelah proses asetolisis dilakukan. Hasil kajian menunjukkan, Sonneratiaceae mempunyai debunga jenis triporat yang bersaiz sederhana hingga besar (diameter 25-55µm), berbentuk prolat (nisbah P/E 1.33-1.78) dengan hiasan rugulat dan verukat. Debunga trikolporat dicerap dalam Avicenniaceae yang bersaiz kecil sehingga sederhana (diameter 19-29 µm), berbentuk sferoid (nisbah P/E 0.96-1.11) dengan hiasan retikulat, manakala Rhizophoraceae mempunyai debunga jenis trikolporat yang bersaiz kecil sehingga sederhana (diameter 11-22 µm), berbentuk suboblat sehingga subprolat (nisbah P/E 0.85-1.25) dan hiasannya adalah berbeza mengikut spesies daripada psilat, skabrat, perforat hingga retikulat. Ciri diagnostik yang ditemui dalam kajian ini ialah jenis hiasan eksin striat dan retikulat bagi Rhizophora x lamarckii serta rugulat dan verukat bagi ketiga-tiga spesies Sonneratia. Manakala, Kandelia candel pula mempunyai dinding eksin fossulat. Selain itu, rabung dicerap hadir pada bahagian mesoporium Sonneratia alba dan S. ovata. Ukuran lumen, valum dan indeks morfologi kolpus dan polar turut dicatatkan. Kekunci dikotomi dan fenogram telah dibina berdasarkan ciri morfologi debunga yang diperolehi daripada kajian. Kesimpulannya, ciri morfologi debunga didapati mempunyai nilai taksonomi terutamanya untuk pembezaan dan pengecaman pada peringkat genus dan famili. Terdapat juga beberapa ciri morfologi debunga yang menunjukkan penyesuaian terhadap persekitaran yang ekstrem. Saiz debunga juga dilihat menunjukkan perkaitan dengan agen pendebungaan bagi spesiesspesies bakau yang dikaji.,The adaptation of pollen morphology of plants that grow in mangrove forest to the environment is still poorly known including three dominant plant families in mangrove forest namely Rhizophoraceae, Avicenniaceae and Sonneratiaceae. This plants able to adapt to the extreme environments that can be seen in the adaptation in the roots, trunks, leaves, flowers or fruits. The objective of this study was to investigate and to list the general and variations in pollen morphological characteristics in the species, genera and families studied. This study is also aimed to evaluate the taxonomic importance of pollen morphological characteristics and its association to the environment and pollinating agents. 19 taxa from family Rhizophoraceae, Avicenniaceae and Sonneratiaceae were collected in Peninsular Malaysia. Pollens were observed under the light and scanning electron microscope after acetolysis method. Findings in this study have shown that the pollen type in Sonneratiaceae is triporate with medium to large in sized (diameter 25-55 µm), prolate in shape (ratio P/E 1.33-1.78) and ornamentation is rugulate and verrucate. Pollen in Avicenniaceae is tricolporate with small to medium in sized (diameter 19-29 µm), spheroidal in shape (ratio P/E 0.96-1.11) and ornamentation is reticulate. However, pollen of Rhizophoraceae is tricolporate with small to medium sized (diameter 11-22 µm), suboblate to subprolate in shape (ratio P/E 0.85-1.25) and ornamentation varies, from psilate, scabrate, perforate to reticulate. Diagnostic characteristics found in this study are in the exine ornamentation, where in Rhizophora x lamarckii the ornamentations are striate and reticulate, the ornamentations in four species of Sonneratia are rugulate and verrucate. While in Kandelia candel it is fossulate. Apart from that a ridge is present in the mesoporium of Sonneratia alba and S. ovata. Measurements of lumina, valli, colpus and polar index are also recorded. Dichotomous key and phenogram have been constructed using data gain from this study. In conclusion, this study has shown that pollen morphological characteristics have some taxonomic value that can be used especially in identification and differentiation of taxa at genus and family level. There are several pollen morphological characteristics that show adaptation to the surrounding extreme environment. Pollen size is also shown to have some relationships to the pollinating agents for the mangrove species studied.,Master | - |
| dc.language.iso | may | - |
| dc.publisher | UKM, Bangi | - |
| dc.relation | Faculty of Science and Technology / Fakulti Sains dan Teknologi | - |
| dc.rights | UKM | - |
| dc.subject | Debunga famili | - |
| dc.subject | Hutan paya bakau | - |
| dc.subject | Pollen -- Morphology | - |
| dc.subject | Dissertations | - |
| dc.subject | Academic- Malaysia | - |
| dc.title | Kajian taksonomi debunga famili rhizophoraceae, avicenniaceae dan sonneratiaceae di hutan paya bakau semenanjung Malaysia | - |
| dc.type | theses | - |
| dc.format.pages | 175 | - |
| dc.identifier.callno | QK658.M8477 2014 tesis | - |
| Appears in Collections: | Faculty of Science and Technology / Fakulti Sains dan Teknologi | |
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| File | Description | Size | Format | |
|---|---|---|---|---|
| ukmvital_80449+SOURCE1+SOURCE1.0.PDF Restricted Access | 16.49 MB | Adobe PDF |  View/Open |
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