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dc.contributor.authorFerguson, M.
dc.contributor.authorShah, T.
dc.contributor.authorKulakow, P.
dc.contributor.authorCeballos, H.
dc.date.accessioned2019-12-04T11:39:09Z
dc.date.available2019-12-04T11:39:09Z
dc.date.issued2019-11-06
dc.identifier.citationFerguson, M., Shah, T., Kulakow, P. & Ceballos, H. (2019). A global overview of cassava genetic diversity. PLOS ONE, 14(11): e0224763, 1-16.
dc.identifier.issn1932-6203
dc.identifier.urihttps://hdl.handle.net/20.500.12478/6551
dc.descriptionOpen Access Journal
dc.description.abstractAlthough numerous studies of diversity have been conducted in cassava, there is no comprehensive assessment of global genetic diversity. Here we draw on previous studies and breeders’ knowledge to select diversity sets from the International Institute of Tropical Agriculture (IITA) and the International Center for Tropical Agriculture (CIAT) genebanks and breeders’ germplasm, as well as elite germplasm and landraces from eastern, southern and central (ESC) Africa to make a global assessment of diversity in cassava, using a SNP based GoldenGate (Illumina Inc.) assay. A synthesis of results from genetic distance and ADMIXTURE analysis essentially revealed four populations (i) South American germplasm characterised by relatively higher genetic diversity with hypothetical ancestral founder genotypes from Brazil, (ii) a smaller group of African introduction germplasm which is more distantly related to all other germplasm, (iii) West Africa germplasm dominated by IITA breeding lines, containing sources of cassava mosaic disease resistance, and IITA genebank accessions from West Africa, both characterised by slightly lower diversity, and (iv) a less cohesive group of African germplasm, termed ‘Other’, with moderate levels of diversity and a majority of germplasm from ESC Africa. This study highlights opportunities for heterosis breeding, purging of duplicates in genebanks and the need for conservation of ESC Africa landraces.
dc.description.sponsorshipGeneration Challenge Program
dc.format.extent1-16
dc.language.isoen
dc.rightsCC-BY-4.0
dc.subjectCassava
dc.subjectGenetic Diversity
dc.subjectGermplasm Banks
dc.subjectDisease Resistance
dc.titleA global overview of cassava genetic diversity
dc.typeJournal Article
dc.description.versionPeer Review
cg.contributor.crpMaize
cg.contributor.crpPolicies, Institutions and Markets
cg.contributor.crpRoots, Tubers and Bananas
cg.contributor.affiliationInternational Institute of Tropical Agriculture
cg.coverage.regionAfrica
cg.coverage.regionWest Africa
cg.coverage.countryNigeria
cg.creator.identifierMorag Ferguson: 0000-0002-7763-5173
cg.creator.identifierTrushar Shah: 0000-0002-0091-7981
cg.creator.identifierPeter Kulakow: 0000-0002-7574-2645
cg.creator.identifierHernan Ceballos: 0000-0002-8744-7918
cg.researchthemeBIOMETRICS
cg.researchthemeBIOTECH & PLANT BREEDING
cg.isijournalISI Journal
cg.authorship.typesCGIAR single centre
cg.iitasubjectBiometrics
cg.iitasubjectCassava
cg.iitasubjectGenetic Improvement
cg.iitasubjectPlant Breeding
cg.iitasubjectPlant Genetic Resources
cg.journalPLOS ONE
cg.howpublishedFormally Published
cg.accessibilitystatusOpen Access
local.dspaceid110089
cg.targetaudienceScientists
cg.identifier.doihttps://dx.doi.org/10.1371/journal.pone.0224763


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