Genetic structuring of important medicinal species of genus Warburgia as revealed by AFLP analysis

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dc.contributor.authorMuchugi, Alice Njeri
dc.contributor.authorMuluvi, G. M.
dc.contributor.authorKindt, R.
dc.contributor.authorKadu, C. A. C.
dc.contributor.authorSimons, A. J.
dc.contributor.authorJamnadass, R. H.
dc.date.accessioned2012-10-18T12:07:46Z
dc.date.available2012-10-18T12:07:46Z
dc.date.issued2008-10
dc.descriptionPublisher version (Springerlink) available at rd.springer.com/article/10.1007/s11295-008-0151-3en_US
dc.description.abstractThe genus Warburgia (Canellaceae) contains four tree species that are of valuable medicinal importance and are all found in Africa. Genetic diversity present in wild populations of these species is under great threat due to unsustainable harvesting for medicines and indiscriminate felling for timber and agricultural expansion. There is therefore an urgent need for conservation of these species. Some authors disagree about the taxonomy of the genus and list different species as synonyms. Amplified fragment length polymorphism (AFLP) technique was used to determine the genetic relationships between three species to resolve the taxonomic confusion. The amount of genetic variation within and among populations was assessed to guide strategies for their conservation and sustainable utilization. Four AFLP primer pairs (EcoRI/MseI) generated a total of 185 amplification products. Analysis of molecular variance revealed most variation among individuals within populations (63%, P < 0.0001), but variation among populations (37%, P < 0.0001) was highly significant as well. Constrained analysis of principal coordinates based on the Jaccard distance confirmed the separation among populations (38.2%, P < 0.0001). A phenetic tree and ordination graphs showed a clear distinction of W. ugandensis from W. salutaris and W. stuhlmannii. W. ugandensis populations from Uganda and western Kenya formed a subgroup that clustered away from the rest of the W. ugandensis populations. W. salutaris and W. stuhlmannii populations showed little genetic differentiation. An implication of the data to genetic management and taxonomic clarification is discussed.en_US
dc.identifier.citationTree Genetics & Genomes October 2008, Volume 4, Issue 4, pp 787-795en_US
dc.identifier.urihttp://ir-library.ku.ac.ke/handle/123456789/5757
dc.language.isoenen_US
dc.publisherSpringeren_US
dc.subjectAFLPen_US
dc.subjectGenetic diversityen_US
dc.subjectGenetic structureen_US
dc.subjectGenusWarburgiaen_US
dc.subjectTaxonomyen_US
dc.titleGenetic structuring of important medicinal species of genus Warburgia as revealed by AFLP analysisen_US
dc.typeArticleen_US
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