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Genetic diversity in bambara groundnut (Vigna subterranea (L.) verdc.) as revealed by phenotypic descriptors and DArT marker analysis

dc.contributor.authorOlukolu, B.A.
dc.contributor.authorMayes, S.
dc.contributor.authorStadler, F.
dc.contributor.authorNg, N.Q.
dc.contributor.authorFawole, I.
dc.contributor.authorDominique, D.
dc.contributor.authorAzam-Ali, S.N.
dc.contributor.authorAbbott, A.G.
dc.contributor.authorKole, C.
dc.date.accessioned2019-12-04T11:10:35Z
dc.date.available2019-12-04T11:10:35Z
dc.date.issued2011-03
dc.identifier.citationOlukolu, B.A., Mayes, S., Stadler, F., Ng, N.Q., Fawole, I., Dominique, D., ... & Kole, C. (2012). Genetic diversity in Bambara groundnut (Vigna subterranea (L.) Verdc.) as revealed by phenotypic descriptors and DArT marker analysis. Genetic Resources and Crop Evolution, 59(3), 347-358.
dc.identifier.issn0925-9864
dc.identifier.urihttps://hdl.handle.net/20.500.12478/2201
dc.description.abstractGenetic diversity of a Bambara groundnut germplasm representing accessions from 25 African countries, maintained at the International Institute of Tropical Agriculture (IITA; Nigeria) was evaluated based on seed patterns, qualitative characters, quantitative traits and Diversity Arrays Technique (DArT) markers. The study aimed at identifying important descriptors for germplasm conservation, validating the crop’s geographical centre of origin and facilitating the utilization of existing genetic resources. Frequencies and diversity indices of seven types of seed patterns, 12 qualitative and 28 quantitative traits were evaluated for 124 representative accessions and were analyzed by region to elucidate the geographic distribution of descriptor states. In addition, individual plant samples from a subset of 40 landrace accessions were analyzed by assessing 554 DArT markers. Both the phenetic tree constructed from the qualitative and quantitative descriptors and the population structure derived from DArT marker analysis suggested a relatively high genetic diversity among accessions. Higher genetic diversity was observed for the Cameroon/Nigeria region relative to other regions, in agreement with the hypothesis that this region is the centre of origin for Bambara groundnut. Use of an extensive and diverse range of germplasm and an approach that integrated morphological and quantitative descriptors with DNA markers that represent wide genomic coverage offered a powerful way to make inferences about crop germplasm, in support of crop-improvement programs.
dc.language.isoen
dc.subjectGermplasm
dc.subjectPhylogeny
dc.subjectPopulation Structure
dc.subjectVigna Subterranea
dc.titleGenetic diversity in bambara groundnut (Vigna subterranea (L.) verdc.) as revealed by phenotypic descriptors and DArT marker analysis
dc.typeJournal Article
dc.description.versionPeer Review
cg.contributor.affiliationClemson University
cg.contributor.affiliationInternational Institute of Tropical Agriculture
cg.contributor.affiliationUniversity of Ibadan
cg.contributor.affiliationUniversity of Nottingham
cg.contributor.affiliationTechnische Universität München
cg.contributor.affiliationSeri Alam Plantation SDN, Malaysia
cg.coverage.regionAfrica
cg.coverage.regionWest Africa
cg.coverage.regionCentral Africa
cg.coverage.countryNigeria
cg.coverage.countryCameroon
cg.isijournalISI Journal
cg.authorship.typesCGIAR and developing country institute
cg.iitasubjectBiodiversity
cg.journalGenetic Resources and Crop Evolution
cg.howpublishedFormally Published
cg.accessibilitystatusLimited Access
local.dspaceid90932
cg.identifier.doihttps://dx.doi.org/10.1007/s10722-011-9686-5


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