Genetic identity and diversity of Nigerian cacao genebank collections verified by single nucleotide polymorphisms (SNPs): a guide to field genebank management and utilization

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cg.authorship.typesCGIAR and developing country instituteen
cg.contributor.affiliationCocoa Research Institute of Nigeriaen
cg.contributor.affiliationFederal University Oyeen
cg.contributor.affiliationUniversity of Calabaren
cg.contributor.affiliationInternational Institute of Tropical Agricultureen
cg.contributor.affiliationUnited States Department of Agricultureen
cg.contributor.affiliationMars, Inc.en
cg.contributor.affiliationWorld Cocoa Foundationen
cg.contributor.crpRoots, Tubers and Bananas
cg.contributor.donorWorld Cocoa Foundationen
cg.coverage.countryNigeria
cg.coverage.iso3166-alpha2NG
cg.coverage.regionAfrica
cg.coverage.regionWestern Africa
cg.creator.identifierRanjana Bhattacharjee: 0000-0002-5184-5930
cg.howPublishedFormally Publisheden
cg.identifier.doihttps://doi.org/10.1007/s11295-018-1244-2en
cg.identifier.iitathemeBIOTECH & PLANT BREEDING
cg.isijournalISI Journalen
cg.issn1614-2942en
cg.issue2en
cg.journalTree Genetics and Genomesen
cg.reviewStatusPeer Reviewen
cg.subject.iitaAGRONOMYen
cg.subject.iitaCOCOAen
cg.subject.iitaCROP SYSTEMSen
cg.subject.iitaFARMING SYSTEMSen
cg.subject.iitaGENETIC IMPROVEMENTen
cg.subject.iitaPLANT BREEDINGen
cg.subject.iitaPLANT GENETIC RESOURCESen
cg.subject.iitaPLANT PRODUCTIONen
cg.volume14en
dc.contributor.authorOlasupo, F.O.en
dc.contributor.authorAdewale, D.B.en
dc.contributor.authorAikpokpodion, P.O.en
dc.contributor.authorMuyiwa, A.A.en
dc.contributor.authorBhattacharjee, Ranjanaen
dc.contributor.authorGutiérrez, O.A.en
dc.contributor.authorMotamayor, J.C.en
dc.contributor.authorSchnell, R.J.en
dc.contributor.authorEbai, S.en
dc.contributor.authorZhang, D.en
dc.date.accessioned2020-07-03T09:50:12Zen
dc.date.available2020-07-03T09:50:12Zen
dc.identifier.urihttps://hdl.handle.net/10568/108666
dc.titleGenetic identity and diversity of Nigerian cacao genebank collections verified by single nucleotide polymorphisms (SNPs): a guide to field genebank management and utilizationen
dcterms.abstractNigeria is the sixth largest cacao producer in the world. Field performance and quality of cacao hybrid families is largely dependent on the genetic integrity of parental clones obtained in field genebank collections. However, information on the impact of mislabeling on seed garden output in Nigeria is lacking. Using 63 single nucleotide polymorphism (SNP) markers, we analyzed 1457 cacao trees sampled from seven major field genebank plots in Nigeria to assess the genetic integrity in Nigerian cacao germplasm. The procedure of multilocus matching with known reference clones revealed up to 78% mislabeling in recently introduced international germplasm. A high rate of mislabeling was also revealed in the West African local selections and breeding lines, using Bayesian assignment test. The problem of mislabeling has been attributed to errors from the sources of introduction, pre-planting labeling errors, and rootstocks overtaking budded scions due to poor field management. The analysis of genetic diversity revealed a good representation of the available cacao germplasm groups in Nigerian field genebanks, indicating that the genetic base of Nigeria cacao germplasm has been significantly widened through germplasm introductions. However, only a small proportion of the available germplasm in the genebank have been utilized for variety development. This study proved the utility of SNP markers for cleaning up the genebanks and reducing offtypes; thereby providing a strong basis for improving the accuracy and efficiency in cacao genebank management and breeding, as well as for mobilizing improved varieties to cacao farmers in Nigeria.en
dcterms.accessRightsLimited Access
dcterms.audienceScientistsen
dcterms.available2018-03-21
dcterms.bibliographicCitationOlasupo, F.O., Adewale, D.B., Aikpokpodion, P.O., Muyiwa, A.A., Bhattacharjee, R., Gutierrez, O.A., ... & Zhang, D. (2018). Genetic identity and diversity of Nigerian cacao genebank collections verified by single nucleotide polymorphisms (SNPs): a guide to field genebank management and utilization. Tree Genetics & Genomes, 14(2), 1-16.en
dcterms.extent1-16en
dcterms.issued2018-04
dcterms.languageen
dcterms.licenseCopyrighted; all rights reserved
dcterms.publisherSpringeren
dcterms.subjecttheobroma cacaoen
dcterms.subjectgeneticsen
dcterms.subjecttropical agricultureen
dcterms.subjectwest africaen
dcterms.subjectnigeriaen
dcterms.subjectgenetic variationen
dcterms.subjectsingle nucleotide polymorphismen
dcterms.subjectgene banksen
dcterms.typeJournal Article

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