Phenotypic and molecular assessment of genetic structure and diversity in a panel of winged yam (Dioscorea alata) clones and cultivars

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dc.creatorAgre, P.
dc.creatorAsibe, F.
dc.creatorDarkwa, K.
dc.creatorEdemodu, A.
dc.creatorBauchet, Guillaume J.
dc.creatorAsiedu, R.
dc.creatorAdebola, P.O.
dc.creatorAsfaw, A.
dc.date2019
dc.date2020-07-20T09:36:02Z
dc.date2020-07-20T09:36:02Z
dc.date.accessioned2026-06-27T16:09:23Z
dc.descriptionA better understanding of the structure and extent of genetic variability in a breeding population of a crop is essential for translating genetic diversity to genetic gain. We assessed the nature and pattern of genetic variability and differentiation in a panel of 100 winged-yam (Dioscorea alata) accessions using 24 phenotypic traits and 6,918 single nucleotide polymorphism (SNP) markers. Multivariate analysis for phenotypic variability indicated that all phenotypic traits assessed were useful in discriminating the yam clones and cultivars. Cluster analysis based on phenotypic data distinguished two significant groups, while a corresponding analysis with SNP markers indicated three genetic groups. However, joint analysis for the phenotypic and genotypic data provided three clusters that could be useful for the identification of heterotic groups in the D. alata breeding program. Our analysis for phenotypic and molecular level diversity provided valuable information about overall diversity and variation in economically important traits useful for establishing crossing panels with contrasting traits of interest. The selection and hybridization of parental lines from the different heterotic groups identified would facilitate maximizing diversity and exploiting population heterosis in the D. alata breeding program.
dc.formatapplication/pdf
dc.identifierhttps://hdl.handle.net/10568/108811
dc.identifier.urihttp://hdl.handle.net/123456789/124054
dc.languageen
dc.publisherSpringer
dc.rightsOpen Access
dc.sourceAgre, P., Asibe, F., Darkwa, K., Edemodu, A., Bauchet, G., Asiedu, R., ... & Asfaw, A. (2019). Phenotypic and molecular assessment of genetic structure and diversity in a panel of winged yam (Dioscorea alata) clones and cultivars. Scientific Reports, 9(1), 1-11.
dc.subjectyams
dc.subjectfood production
dc.subjectdioscorea
dc.subjectdioscorea alata
dc.subjectfood security
dc.subjectplant breeding
dc.subjectyields
dc.subjectdna
dc.subjectwest africa
dc.subjectgenetic structures
dc.subjectgenetic diversity
dc.subjectbiodiversity
dc.titlePhenotypic and molecular assessment of genetic structure and diversity in a panel of winged yam (Dioscorea alata) clones and cultivars
dc.typeJournal Article

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Instituto Internacional de Agricultura Tropical (IITA)