A comparative assessment of molecular marker assays (AFLP, RAPD and SSR) for white yam (Dioscorea rotundata) germplasm characterisation

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dc.creatorMignouna, Hodeba D.
dc.creatorAbang, Mathew M.
dc.creatorFagbemi, S.A.
dc.date2003-06
dc.date2018-08-09T06:40:30Z
dc.date2018-08-09T06:40:30Z
dc.date.accessioned2026-06-27T15:51:39Z
dc.descriptionSeveral DNA-based marker systems are available for genetic fingerprinting of plants but information on their relative usefulness for yam germplasm characterisation is lacking. The efficiency of RAPD, AFLP and SSR markers for the assessment of genetic relationships, and for cultivar identification and discrimination among 45 West and Central African white yam cultivars belonging to 22 morphotypes/cultivar groups was investigated. Dendrograms were produced based on band pattern scores using the UPGMA method. Results showed that each of the three techniques could unequivocably identify each cultivar, but that techniques differed in the mean number of profiles generated per primer (or primer pair) per cultivar, referred to as genotype index (GI). The order of merit based on this criterion in this study was AFLPs (GI = 2.56), SSRs (GI = 0.39) and RAPDs (GI = 0.35). Yam genotypes classified in the same cultivar group based on morphology were often genetically different, emphasising the need for molecular fingerprinting in yam germplasm characterisation. AFLPs showed the highest efficiency in detecting polymorphism and revealed genetic relationships that most closely reflected morphological classification.
dc.identifierhttps://hdl.handle.net/10568/96346
dc.identifier.urihttp://hdl.handle.net/123456789/115632
dc.languageen
dc.publisherWiley
dc.rightsLimited Access
dc.sourceMignouna, H.D., Abang, M.M. & Fagbemi, S.A. (2003). A comparative assessment of molecular marker assays (AFLP, RAPD and SSR) for white yam (Dioscorea rotundata) germplasm characterization. Annals of Applied Biology, 142(3), 269-276.
dc.subjectdioscorea rotundata
dc.subjectgenetic variation
dc.subjectgenotypes
dc.subjectmolecular markers
dc.subjectdna
dc.titleA comparative assessment of molecular marker assays (AFLP, RAPD and SSR) for white yam (Dioscorea rotundata) germplasm characterisation
dc.typeJournal Article

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Instituto Internacional de Agricultura Tropical (IITA)