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Genetic and geographic variation of the mangrove tree Bruguiera in Sri Lanka Abeysinghe, P.D.; Triest, L.; De Greef, B.; Koedam, N.; Hettiarachi, S. (2000). Genetic and geographic variation of the mangrove tree Bruguiera in Sri Lanka. Aquat. Bot. 67(2): 131-141. dx.doi.org/10.1016/S0304-3770(99)00096-0 In: Aquatic Botany. Elsevier Science: Tokyo; Oxford; New York; London; Amsterdam. ISSN 0304-3770; e-ISSN 1879-1522, meer

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Beschikbaar in	Auteurs
VLIZ: Open Marine Archive 278830 [ download pdf ]

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Trefwoorden

Acids > Organic compounds > Organic acids > Nucleic acids > DNA Biology > Genetics > Population genetics Chemistry > Biochemistry Distribution > Geographical distribution Geography Natural populations > Plant populations Organisms > Eukaryotes > Plants > Woody plants > Trees Spatial variations > Regional variations Subpopulations Topographic features > Landforms > Coasts Trees Trees Water bodies > Inland waters > Wetlands > Swamps > Mangrove swamps Bruguiera sexangula (Lour.) Poir. [WoRMS] Sri Lanka [Marine Regions] Brak water

Author keywords

DNA; RAPD; genetic diversity; Bruguiera; Sri Lanka; mangroves; Data interpretation; ISW, sri lanka, southern, galle; Coast (see also shore); Distribution (mathematical); ISW, sri lanka, western, negombo; ISW, sri lanka, southern, rekawa beach

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Auteurs		Top
Abeysinghe, P.D., meer Triest, L., meer De Greef, B.	Koedam, N., meer Hettiarachi, S.

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Abstract

The variation in two Bruguiera species in populations from different climatic and macrogeographic regions along the western to southeastern coastal area in Sri Lanka was studied using RAPD (Random Amplified Polymorphic DNA), Intra- and interspecific variation was observed using 20 primers of the 45 primers screened. Some primers showed diagnostic banding patterns and allowed unambiguous differentiation between B. sexangula and B. gymnorhiza without any indication of hybrid individuals. RAPD markers were also used to produce a similarity matrix among individuals of a species. A higher degree of polymorphism was observed within populations of B. gymnorhiza in Rekawa, situated in the climatically intermediate (between the wet and dry) zone, than within populations from the wet zone (Galle and Negombo). RAPD data analysis did not reveal a clear relationship between genetic differences and macrogeographical variation along the western and southern coastal area in Sri Lanka, but indicated that a small population of B. sexangula was genetically different. A more pronounced genetic difference at the population level in B. sexangula than in B. gymnorhiza is suggested.

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