Genetic structure analysis and identifying key founder inbred lines in diverse elite sub‑tropical maize inbred lines

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cg.authorship.typesCGIAR and developing country institute
cg.contributor.affiliationInternational Institute of Tropical Agriculture
cg.contributor.affiliationKindo Seeds, Niger
cg.contributor.affiliationArba Minch University
cg.contributor.affiliationInternational Maize and Wheat Improvement Center
cg.contributor.affiliationHaryana Agricultural University
cg.contributor.affiliationUniversity of Minnesota
cg.contributor.affiliationKyungpook National University
cg.contributor.affiliationInternational Corn Foundation, Republic of Korea
cg.contributor.crpMaize
cg.contributor.crpRoots, Tubers and Bananas
cg.contributor.donorBill & Melinda Gates Foundation
cg.contributor.donorCGIAR Trust Fund
cg.contributor.initiativeAccelerated Breeding
cg.coverage.countryCameroon
cg.coverage.countryNigeria
cg.coverage.iso3166-alpha2CM
cg.coverage.iso3166-alpha2NG
cg.coverage.regionAfrica
cg.coverage.regionWest and Central Africa
cg.coverage.regionMiddle Africa
cg.coverage.regionWestern Africa
cg.creator.identifierMelaku Gedil: 0000-0002-6258-6014
cg.creator.identifierGarcia-Oliveira AL: 0000-0001-8561-4172
cg.creator.identifierNnanna Unachukwu: 0000-0003-2701-2477
cg.creator.identifierCesar Petroli: 0000-0003-0502-248X
cg.creator.identifierSarah Hearne: 0000-0003-2015-2450
cg.creator.identifierAbebe Menkir: 0000-0002-5907-9177
cg.howPublishedFormally Published
cg.identifier.doihttps://doi.org/10.1038/s41598-023-38980-3
cg.identifier.iitathemeBIOTECH & PLANT BREEDING
cg.isijournalISI Journal
cg.issn2045-2322
cg.issue1
cg.journalScientific Reports
cg.number11695
cg.reviewStatusPeer Review
cg.subject.iitaAGRONOMY
cg.subject.iitaFOOD SECURITY
cg.subject.iitaMAIZE
cg.subject.iitaPLANT BREEDING
cg.subject.iitaPLANT PRODUCTION
cg.subject.impactAreaNutrition, health and food security
cg.subject.sdgSDG 2 - Zero hunger
cg.volume13
dc.contributor.authorGedil, M.
dc.contributor.authorSayadi Maazou, A.R.
dc.contributor.authorZebire, D.
dc.contributor.authorGarcia-Oliveira, A.L.
dc.contributor.authorUnachukwu, N.
dc.contributor.authorPetroli, C.D.
dc.contributor.authorHearne, S.
dc.contributor.authorEverett, L.A.
dc.contributor.authorKim, S.K.
dc.contributor.authorMenkir, A.
dc.date.accessioned2023-10-25T10:37:20Zen
dc.date.available2023-10-25T10:37:20Zen
dc.identifier.urihttps://hdl.handle.net/10568/132422
dc.titleGenetic structure analysis and identifying key founder inbred lines in diverse elite sub‑tropical maize inbred linesen
dcterms.abstractUnderstanding the genetic relationships between the key founder inbred lines and derived inbred lines could provide insight into the breeding history and the structure of genetic diversity of the available elite inbred lines with desirable target traits. The maize improvement program at the International Institute of Tropical Agriculture (IITA) analyzed the pedigree information of 623 sub-tropical maize inbred lines generated at the IITA maize breeding program to identify the key founder inbred lines. We also used 5032 SNP markers to assess the genetic similarities of the founder inbred lines with their progenies subsequently developed for specific target traits. The results of pedigree analysis and SNP markers-based similarity scores identified 20 key founder inbred lines with significant contributions to the development of drought tolerant, early maturing, productive, Striga resistant, provitamin A enriched, and quality protein maize inbred lines. In our breeding program, line TZMi501 belonging to a flint heterotic group (HGA), and TZMi407-S and TZMi214, representing the dent heterotic group (HGB), were identified as the most useful founder inbred lines. The 623 inbred lines were consistently separated into four clusters based on Ward’s hierarchical clustering, structure, and principal component analyses, with the 20 founder inbred lines spread into all clusters. The founder inbred lines were more genetically related to the productive inbred lines but showed genetic divergence from the provitamin A enriched inbred lines. These results provide a better understanding of the breeding history of the sub-tropical maize inbred lines to facilitate parental selection aligned to existing heterotic groups for use in breeding programs targeting the improvement of essential traits in maize.en
dcterms.accessRightsOpen Access
dcterms.audienceScientists
dcterms.available2023-07-20
dcterms.bibliographicCitationGedil, M., Maazou, A.R., Zebire, D., Garcia-Oliveira, A.L., Unachukwu, N., Petroli, C.D., ... & Menkir, A. (2023). Genetic structure analysis and identifying key founder inbred lines in diverse elite sub-tropical maize inbred lines. Scientific Reports, 13(1):11695, 1-12.en
dcterms.extent1-12
dcterms.issued2023
dcterms.languageen
dcterms.licenseCC-BY-4.0
dcterms.publisherSpringer
dcterms.subjectgenetic structuresen
dcterms.subjectmaizeen
dcterms.subjectfood securityen
dcterms.subjectgenotypesen
dcterms.subjectinbred linesen
dcterms.typeJournal Article

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