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Genetic diversity in cocoa germplasm of southern Cameroon revealed by simple sequences repeat (SSRS) markers

dc.contributor.authorEfombagn, M.I.B.
dc.contributor.authorSounigo, O.
dc.contributor.authorNyassé, S.
dc.contributor.authorDauleux, M.M.
dc.contributor.authorCilas, Christian
dc.contributor.authorEskes, M.A.
dc.contributor.authorAllen, K.
dc.date.accessioned2019-12-04T11:18:10Z
dc.date.available2019-12-04T11:18:10Z
dc.date.issued2006
dc.identifier.citationEfombagn, M.I., Sounigo, O., Nyassé, S., Dauleux, M.M., Cilas, C., Eskes, M.A. & Allen, K. (2006). Genetic diversity in cocoa germplasm of southern Cameroon revealed by simple sequences repeat (SSRs) markers. African Journal of Biotechnology, 5(16), 1441-1449.
dc.identifier.issn1684-5315
dc.identifier.urihttps://hdl.handle.net/20.500.12478/3084
dc.description.abstractThe range of polymorphism of about 194 cocoa accessions collected in farms in Southern Cameroon during field surveys and 71 Trinitario and Upper Amazon clones available in genebanks on-station was assessed using 13 SSR markers. The gene diversity, genetic differentiation and genetic similarities were analysed for the different populations. In total, 282 alleles were detected within all the populations studied. The farm accessions were strongly differentiated based on their geographical origin, with accessions coming from the East province clustering together with local Trinitario accessions from the genebank. Accessions from the Centre-South provinces clustered with Amazon and hybrid accessions, suggesting more uptake of seed garden materials in farms in these provinces. The genetic diversity parameters indicate that the farmers’ planting material is not highly diverse, and is genetically close to parental genotypes available in genebanks. However, some promising Upper Amazon clones (T-clones) that have also been used as parents of released hybrid varieties were genetically distant from the accessions. This result suggests that the progenies of these parents have so far been poorly used in the cocoa farms surveyed. The consequences of these findings for cocoa breeding in Cameroon are discussed.
dc.language.isoen
dc.subjectCocoa (Plant)
dc.subjectSsr Markers
dc.subjectPolymorphism
dc.subjectAgronomic Traits
dc.subjectBreeding
dc.subjectGenetic
dc.subjectGene Banks
dc.titleGenetic diversity in cocoa germplasm of southern Cameroon revealed by simple sequences repeat (SSRS) markers
dc.typeJournal Article
dc.description.versionPeer Review
cg.contributor.affiliationInstitute of Agricultural Research for Development, Cameroon
cg.contributor.affiliationCentre de Coopération Internationale en Recherche Agronomique pour le Développement
cg.contributor.affiliationInternational Institute of Tropical Agriculture
cg.coverage.regionAfrica
cg.coverage.regionAcp
cg.coverage.regionCentral Africa
cg.coverage.regionEurope
cg.coverage.regionWest Africa
cg.coverage.countryCameroon
cg.coverage.countryFrance
cg.coverage.countryNigeria
cg.isijournalISI Journal
cg.authorship.typesCGIAR and developing country institute
cg.iitasubjectPlant Breeding
cg.iitasubjectCocoa
cg.iitasubjectMarkets
cg.iitasubjectAgribusiness
cg.iitasubjectDomestic Trade
cg.iitasubjectSmallholder Farmers
cg.iitasubjectFarm Management
cg.iitasubjectNutrition
cg.iitasubjectPlant Production
cg.iitasubjectCrop Husbandry
cg.iitasubjectFood Security
cg.iitasubjectHandling, Transport, Storage And Protection Of Agricultural Products
cg.iitasubjectDiseases Control
cg.iitasubjectLivelihoods
cg.iitasubjectPests Of Plants
cg.accessibilitystatusOpen Access
local.dspaceid94550


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