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A multi-parent advanced generation inter-cross (MAGIC) population for genetic analysis and improvement of cowpea (Vigna unguiculata L. Walp.)

dc.contributor.authorHuynh, B.L.
dc.contributor.authorEhlers, J.D.
dc.contributor.authorHuang, B.E.
dc.contributor.authorMuñoz Amatriarin, M.
dc.contributor.authorLonardi, S.
dc.contributor.authorSantos, J.R.P.
dc.contributor.authorNdeve, A.
dc.contributor.authorBatieno, B.J.
dc.contributor.authorBoukar, O.
dc.contributor.authorCisse, N.
dc.contributor.authorDrabo, I.
dc.contributor.authorFatokun, C.A.
dc.contributor.authorKusi, F.
dc.contributor.authorAgyare, R.Y.
dc.contributor.authorGuo, Y.N.
dc.contributor.authorHerniter, I.
dc.contributor.authorLo, S.
dc.contributor.authorWanamaker, S.I.
dc.contributor.authorXu, S.
dc.contributor.authorClose, T.J.
dc.contributor.authorRoberts, P.A.
dc.date.accessioned2019-12-04T11:19:12Z
dc.date.available2019-12-04T11:19:12Z
dc.date.issued2018-03
dc.identifier.citationHuynh, B.L., Ehlers, J.D., Huang, B.E., Munoz‐Amatriain, M., Lonardi, S., Santos, J.R.P., ... & Roberts, P.A. (2018). A multi‐parent advanced generation inter‐cross (MAGIC) population for genetic analysis and improvement of cowpea (Vigna unguiculata L. Walp.). The Plant Journal, 93(6), 1129-1142.
dc.identifier.issn0960-7412
dc.identifier.urihttps://hdl.handle.net/20.500.12478/3418
dc.descriptionPublished online: 21 Jan 2018
dc.description.abstractMulti‐parent advanced generation inter‐cross (MAGIC) populations are an emerging type of resource for dissecting the genetic structure of traits and improving breeding populations. We developed a MAGIC population for cowpea (Vigna unguiculata L. Walp.) from eight founder parents. These founders were genetically diverse and carried many abiotic and biotic stress resistance, seed quality and agronomic traits relevant to cowpea improvement in the United States and sub‐Saharan Africa, where cowpea is vitally important in the human diet and local economies. The eight parents were inter‐crossed using structured matings to ensure that the population would have balanced representation from each parent, followed by single‐seed descent, resulting in 305 F8 recombinant inbred lines each carrying a mosaic of genome blocks contributed by all founders. This was confirmed by single nucleotide polymorphism genotyping with the Illumina Cowpea Consortium Array. These lines were on average 99.74% homozygous but also diverse in agronomic traits across environments. Quantitative trait loci (QTLs) were identified for several parental traits. Loci with major effects on photoperiod sensitivity and seed size were also verified by biparental genetic mapping. The recombination events were concentrated in telomeric regions. Due to its broad genetic base, this cowpea MAGIC population promises breakthroughs in genetic gain, QTL and gene discovery, enhancement of breeding populations and, for some lines, direct releases as new varieties.
dc.description.sponsorshipCGIAR Generation Challenge Program
dc.description.sponsorshipUnited States Agency for International Development
dc.format.extent1129–1142
dc.language.isoen
dc.subjectLegumes
dc.subjectCowpeas
dc.subjectVigna Unguiculata
dc.subjectMagic
dc.subjectQtl
dc.subjectFlowering
dc.subjectPhotoperiod
dc.subjectGenetic Resources
dc.titleA multi-parent advanced generation inter-cross (MAGIC) population for genetic analysis and improvement of cowpea (Vigna unguiculata L. Walp.)
dc.typeJournal Article
dc.description.versionPeer Review
cg.contributor.crpAgriculture for Nutrition and Health
cg.contributor.crpGrain Legumes
cg.contributor.affiliationUniversity of California
cg.contributor.affiliationDiscovery Sciences, USA
cg.contributor.affiliationInstitut de l'Environnement et de Recherches Agricoles, Burkina Faso
cg.contributor.affiliationInternational Institute of Tropical Agriculture
cg.contributor.affiliationInstitut Sénégalais de Recherches Agricoles
cg.contributor.affiliationSavanna Agricultural Research Institute, Ghana
cg.creator.identifierChristian Fatokun: 0000-0002-8428-7939
cg.isijournalISI Journal
cg.authorship.typesCGIAR and developing country institute
cg.iitasubjectCowpea
cg.iitasubjectGenetic Improvement
cg.iitasubjectGrain Legumes
cg.iitasubjectPlant Genetic Resources
cg.journalThe Plant Journal
cg.howpublishedFormally Published
cg.accessibilitystatusOpen Access
local.dspaceid95211
cg.targetaudienceScientists
cg.identifier.doihttps://doi.org/10.1111/tpj.13827


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