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https://ptsldigital.ukm.my/jspui/handle/123456789/463460| Title: | Anatomi dan mikromoforlogi daun famili rhizophoraceae |
| Authors: | Nurnida Mohd Kamal (P45276) |
| Supervisor: | Noraini Talip, Dr. |
| Keywords: | rhizophoraceae Rhizophoraceae |
| Issue Date: | 4-Oct-2012 |
| Description: | Kajian anatomi dan mikromorfologi daun telah dijalankan ke atas tujuh genus daripada famili Rhizophoraceae. Sebanyak 23 spesies telah dipilih dalam kajian ini iaitu empat genus Rhizophoraceae Hutan Paya Bakau yang terdiri daripada Bruguiera, Ceriops, Kandelia dan Rhizophora manakala tiga genus lagi dikenali sebagai Rhizophoraceae Daratan yang terdiri daripada genus Carallia, Gynotroches dan Pellacalyx. Kajian ini dijalankan untuk mengkaji dan mengenalpasti ciri-ciri anatomi dan mikromorfologi daun yang boleh digunakan untuk pengecaman spesies dan genus, ciri anatomi ekologi dan juga dijadikan data sokongan dalam pengelasan tumbuhan. Kaedah yang digunakan bagi kajian anatomi adalah melibatkan hirisan dengan mikrotom gelongsor, penjernihan dan siatan epidermis daun manakala bagi kajian mikromorfologi pula kaedah yang digunakan adalah melibatkan imbasan permukaan epidermis abaksial dan adaksial daun di bawah mikroskop imbasan elektron. Hasil kajian menunjukkan terdapat variasi dan persamaan dalam ciri anatomi dan mikromorfologi daun. Hasil kajian merekodkan kehadiran enam jenis stomata iaitu tetrasitik, staurositik, siklositik, anisositik, parasitik dan anomositik pada spesies kajian. Sembilan bentuk luaran pada tulang daun, sepuluh bentuk luaran petiol dan lima bentuk luaran tepi daun dicerap. Corak berkas vaskular pula menunjukkan variasi yang tinggi dengan enam corak berkas vaskular pada tulang daun dan sembilan corak berkas vaskular petiol. Tujuh corak ornamentasi kutikel dan dinding antiklin serta enam jenis lilin didapati mempunyai nilai taksonomi terutamanya untuk pembezaan genus dan spesies. Hasil kajian juga menunjukkan terdapat dua ciri diagnostik yang boleh digunakan untuk membezakan spesies yang mendiami habitat bakau dan darat iaitu kehadiran trikom dan juga sel arenkima. Trikom dilihat hadir pada spesies Gynotroches dan Pellacalyx manakala tiada trikom dicerap pada spesies di kawasan bakau. Begitu juga dengan sel arenkima hanya didapati hadir pada spesies di kawasan bakau (Bruguiera, Ceriops, Kandelia dan Rhizophora) dan juga spesies daripada genus Carallia. Peruratan tepi daun dilihat boleh membezakan spesies daripada genus Ceriops. Kesimpulannya, hasil kajian menunjukkan ciri anatomi dan mikromorfologi daun mempunyai nilai taksonomi untuk pengecaman dan pengelasan di peringkat genus dan spesies juga boleh digunakan untuk mencerap ciri anatomi ekologi dalam famili Rhizophoraceae.,Leaf micromorphology and anatomy study were undertaken on seven genera of Rhizophoraceae. 23 species were chosen in which four genera were known as 'Mangrove Rhizophoraceae' (Bruguiera, Ceriops, Kandelia and Rhizophora) while another 3 genera were known as 'Inland Rhizophoraceae' (Carallia, Gynotroches and Pellacalyx). These study were conducted in order to determine and investigate the leaf anatomical and micromorphological characteristics that can be used in species and genus identification, to determine the anatomical characteristics that relates to their ecology and also to collect supportive data for plant classification. Anatomical observations used in this study were from sectionings using sliding microtome, leaf clearing and epidermal peels. For micromorphological study, leaf lamina was observed under scanning electron microscope. Findings in this study have shown some variations and similarities in the leaf anatomical and micromorphological characteristics. There are six types of stomata present (tetracytic, staurocytic, siklocytic, anisocytic, paracytic and anomocytic), nine midrib outlines, 10 petiole outlines and five marginal outlines were observed in this study. Taxonomic significanc3 was observed in the various vascular bundles patterns of midrib (6) and petioles (9), cuticle ornamentation (7) and wax patterns (9). They occured in all species studied which can be used for species and genus differentiation. Two diagnostic characters that is the presence of trichomes and arenchyma cells can be used to differentiate the species in relation to their habitat. Trichomes were present in inland Rhizophoraceae (Gynotroches and Pellacalyx) with the exception of Carallia while none were observed in the mangrove species (Bruguiera, Ceriops, Kandelia and Rhizophora). The marginal leaf venation showed taxonomic value in species differentiation in Ceriops. In conclusion, findings of this study have shown that the anatomical and micromorphological characteristics have taxonomic value which is useful in identification and classification at genus and species level. They are also indicative of the ecology and habitat of the Rhizophoraceae.,Master/Sarjana |
| Pages: | 310 |
| Call Number: | SD397.R5N847 2012 tesis |
| Publisher: | UKM, Bangi |
| Appears in Collections: | Faculty of Science and Technology / Fakulti Sains dan Teknologi |
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|---|---|---|---|---|
| ukmvital_81839+SOURCE1+SOURCE1.1.PDF Restricted Access | 9.5 MB | Adobe PDF |  View/Open |
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