Malays. Appl. Biol. (2009) 38(2): 11–16
SYSTEMATIC SIGNIFICANCE OF THE PETIOLE VASCULAR BUNDLES TYPES IN DIPTEROCARPUS
GAERTN. F. (DIPTEROCARPACEAE)
*RUZI, A.R., HUSSIN, K. & NORAINI, T.
School of Environment and Natural Resource Sciences,
Faculty of Science and Technology, Universiti Kebangsaan Malaysia,
43600 Bangi, Selangor, Malaysia
Email:
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ABSTRACT
A comprehensive survey and descriptions on the petiole anatomy was undertaken on 16 Dipterocarpus species to investigate variations in vascular bundle structure that may be useful in classification and identification of species. All species have a complex structure of vascular bundles consisting of several closed rings of bundles. Five different types of vascular bundles i.e Type 1, 2, 3, 4 and 5 in the petiole transverse sections were found, based on the arrangement and system of vascular bundles strand. Types of vascular bundles were determined and suggested for easy reference. Results showed that the types of vascular bundles can be used for grouping of species in Dipterocarpus and also helping in species identification.
ABSTRAK
Tinjauan komprehensif dan huraian ke atas anatomi petiol melibatkan 16 spesies Dipterocarpus untuk mengenalpasti variasi struktur berkas vaskular yang boleh digunakan untuk pengelasan dan pengecaman spesies. Semua spesies yang dikaji mempunyai sktruktur berkas vaskular yang kompleks dan sistem vaskular jenis tertutup. Lima corak berbeza berkas vaskular petiol iaitu Corak 1, 2, 3, 4 dan 5 telah dikenalpasti berdasarkan susunan dan sistem berkas vaskular. Corak berkas vaskular ini dicadangkan untuk dijadikan rujukan yang mudah difahami. Kajian ini menunjukkan corak berkas vaskular boleh digunakan untuk mengelompokkan spesies dalam genus Dipterocarpusdan juga membantu pengecaman spesies.
Key words: Dipterocarpus, Petiole anatomy, Vascular bundles
REFERENCES
Agbagwa, I.O. & Ndukwa, B.C. 2004. The value of morpho-anatomical features in the systematic of CucurbitaL. (Cucurbitaceae) species in Nigeria. African Journal of Biotechnology 3(10):541–546.
Ashton, P.S. 1982. Dipterocarpaceae. Series 1 – Spermatophyta. In: Van Steenis, C. G. G. J. (ed.) Flora Malesiana 1(9):237–552.
Candolle, C.D.E. 1879. Anatomie compare des feulles chez quelques familles de Dicotyledones. Mémoires de la Société de Physique et d’Histoire Naturelle de Genève 26: 427–480.
Dehgan, B. 1982. Comparative anatomy of the petiole and infrageneric relationships in Jatropha(Euphorbiaceae). American Journal of Botany 69(8): 1283–1295.
Johansen, D.A. 1940. Plant Microtechnique. McGraw-Hill, New York and London.
Kamel, E.A. & Loutfy, M.H.A. 2001. The significance of cuticular features, petiole anatomy and SDS-PAGE in the taxonomy of the Lauraceae. Pakistan Journal of Biological Sciences 4(9):1094–1100.
Keating, R.C. 2002. Leaf anatomical characters and their value in understanding morphoclines in the Araceae. The Botanical Review 68(4):510–523.
Kocsis, M. & Borhidi, A. 2003. Petiole anatomy of some Rubiaceae genera. Acta Botanica Hungarica 45(3-4):345–353.
Maury-Lechon, G. & Curtet, L. 1998. Biogeography and evolutionary systematics of Dipterocarpaceae. In: Appanah, S. & Turnbull, J.M. (eds.), A Review of Dipterocarps: Taxonomy, Ecology and Silviculture. Center for International Forestry Research, Bogor, Indonesia.
Maury-Lechon, G. & Curtet, L. 1998. Biogeography and evolutionary systematics of Dipterocarpaceae. In: Appanah, S. & Turnbull, J.M. (eds.), A Review of Dipterocarps: Taxonomy, Ecology and Silviculture. Center for International Forestry Research, Bogor, Indonesia.
Mbagwu, F.N. & Nwachukwu, C.U. 2006. Petiolar anatomy of eight Nigerian species of VignaSavi (Leguminosae-papilionoideae). International Journal of Natural and Applied Sciences 2(3): 193–196.
Metcalfe, C.R. & Chalk, L. 1950. Anatomy of the Dicotyledons.Vol 1. Oxford: Clarendron Press.
Pardi, M., Hussin, K & Latiff, A. 1991. Anatomi petiol beberapa spesies daripada famili Dipterocarpaceae Malaysia. Prioriti Penyelidikan: 610–617.
Pardi, M., Hussin, K & Latiff, A. 1991. Anatomi petiol beberapa spesies daripada famili Dipterocarpaceae Malaysia. Prioriti Penyelidikan: 610–617.
Rojo, J.P. 1987. Petiole anatomy and infrageneric in interspesific relationship Philippine Shorea (Dipterocarpaceae). In Kostermans, A.J.G.H. (ed). Proceedings of the third round table conference on Dipterocarp: 569–601.
Saas, J.E. 1958. Botanical Microtechnique. 3rd Edition. Iowa State University, Ames.
Stephan, P.T. & Haron, N. 2002. Anatomical studies in west Malaysian Icacinaceae. Australian Systematic Botany 11(6): 729–738.
