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Registration of provitamin A-enriched tropical maize inbred lines

dc.contributor.authorMenkir, A.
dc.contributor.authorMeseka, S.
dc.contributor.authorGedil, M.
dc.contributor.authorOjo, T.
dc.contributor.authorMengesha Abera, W.
dc.date.accessioned2024-09-03T10:46:10Z
dc.date.available2024-09-03T10:46:10Z
dc.date.issued2024
dc.identifier.citationMenkir, A., Meseka, S., Gedil, M., Ojo, T. & Mengesha Abera, W. (2024). Registration of provitamin A‐enriched tropical maize inbred lines. Journal of Plant Registrations, 1-10.
dc.identifier.issn1936-5209
dc.identifier.urihttps://hdl.handle.net/20.500.12478/8519
dc.description.abstractVitamin A deficiency and its associated disorders are pervasive in sub-Saharan Africa (SSA) including many middle- and low-income countries across the world. Provitamin A-enriched maize (Zea mays L.) inbred lines with desirable agronomic and adaptive traits have been developed and used to generate and commercialize maize varieties with medium to high levels of provitamin A in a few countries to curb vitamin A deficiency. Nonetheless, these inbred lines have not been made widely available to the public and private sector breeders in many countries. The main purpose for releasing the 21 provitamin A-enriched tropical maize inbred lines (PI 705424–PI 705444, Reg. nos. GP-624–GP-644) is to supply maize breeders with elite source germplasm for increasing provitamin A and other carotenoids to much higher levels to offset losses during storage, natural degradation, and processing. These inbred lines were developed at the International Institute of Tropical Agriculture (IITA) from backcrosses of high β-carotene temperate lines as donors and elite tropical lines as recipients. These inbred lines were developed through repeated self-pollination with rigorous visual selection among and within lines for plant vigor, synchronous silk emergence and pollen shedding, low ear placement, and resistance to lodging and major tropical diseases, followed by selection for bright yellow to orange kernel color with semi flint to flint kernel texture after harvest. The released maize inbred lines will be diverse sources of favorable alleles to accelerate genetic gain in provitamin A and other beneficial carotenoid enrichment for human health.
dc.description.sponsorshipHarvestPlus
dc.format.extent1-10
dc.language.isoen
dc.subjectMaize
dc.subjectProvitamins
dc.subjectSub-Saharan Africa
dc.subjectFood Security
dc.titleRegistration of provitamin A-enriched tropical maize inbred lines
dc.typeJournal Article
cg.contributor.crpMaize
cg.contributor.affiliationInternational Institute of Tropical Agriculture
cg.coverage.regionAfrica
cg.coverage.regionWest Africa
cg.coverage.countryNigeria
cg.coverage.hubHeadquarters and Western Africa Hub
cg.researchthemeBiotech and Plant Breeding
cg.identifier.bibtexciteidMENKIR:2024a
cg.isijournalISI Journal
cg.authorship.typesCGIAR Single Centre
cg.iitasubjectAgronomy
cg.iitasubjectFood Security
cg.iitasubjectMaize
cg.iitasubjectPlant Breeding
cg.iitasubjectPlant Production
cg.journalJournal of Plant Registrations
cg.notesOpen Access Article
cg.accessibilitystatusOpen Access
cg.reviewstatusPeer Review
cg.usagerightslicenseCreative Commons Attribution-NonCommercial-NoDerivatives 4.0 (CC BY-NC-ND 4.0)
cg.targetaudienceScientists
cg.identifier.doihttps://doi.org/10.1002/plr2.20356
cg.iitaauthor.identifierAbebe Menkir: 0000-0002-5907-9177
cg.iitaauthor.identifierSILVESTRO MESEKA: 0000-0003-1004-2450
cg.iitaauthor.identifierMelaku Gedil: 0000-0002-6258-6014
cg.iitaauthor.identifierWende Mengesha: 0000-0002-2239-7323
cg.futureupdate.requiredNo
cg.contributor.acknowledgementsThis research was conducted at IITA with funding from the HarvestPlus Challenge Program. The authors express their appreciation with thanks to Torbert Rocheford for supplying the high β-carotene donor temperate inbred lines used in our breeding program and his constant support and sharing of information. The authors are also grateful to all staffs that participated during planting, data recording, harvesting, and management of trials conducted at various locations as well as staffs that ran carotenoid analyses in the IITA crop utilization laboratory.


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