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Assessment of genetic diversity among low-nitrogen-tolerant early generation maize inbred lines using SNP markers

dc.contributor.authorAjala, S.O.
dc.contributor.authorOlayiwola, M.O.
dc.contributor.authorIlesanmi, O.J.
dc.contributor.authorGedil, M.
dc.contributor.authorJob, A.O.
dc.contributor.authorOlaniyan, A.B.
dc.date.accessioned2019-12-04T11:36:17Z
dc.date.available2019-12-04T11:36:17Z
dc.date.issued2019-02-14
dc.identifier.citationAjala, S.O., Olayiwola, M.O., Ilesanmi, O.J., Gedil, M., Job, A.O. & Olaniyan, A.B. (2019). Assessment of genetic diversity among low-nitrogen-tolerant early generation maize inbred lines using SNP markers. South African Journal of Plant and Soil, 36(3), 181-188.
dc.identifier.issn0257-1862
dc.identifier.urihttps://hdl.handle.net/20.500.12478/6181
dc.description.abstractLow soil nitrogen (low-N) level is responsible for yield reduction in maize (Zea mays L.) fields in sub-Saharan Africa. A clear understanding of the genetic diversity among early generation inbred lines selected from various elite low-N- tolerant populations offers an opportunity to obtain lines that could be used in parental combinations to develop high-yielding low-N-tolerant maize hybrids. A total of 115 S3 lines derived from four low-N-tolerant populations were assessed for genetic diversity using 15 670 single nucleotide polymorphism (SNP) markers. The SNP markers were highly polymorphic with polymorphic information content ranging from 0.0 to 0.38. The genetic diversity among the inbred lines ranged from 0.0 to 0.50 and thus indicated the high level of dissimilarity among the inbred lines. The neighbour-joining clustering algorithm and model-based population structure classified the 115 lines into four distinct groups that were generally consistent with the genetic backgrounds of the inbred lines. The information obtained from this study revealed genetic diversity among the inbred lines and may guide the selection of potential parents for detailed combining ability studies and eventual use in hybrid combinations. The selected inbred lines would be invaluable in the development of low-N-tolerant hybrids.
dc.description.sponsorshipAfrica Development Bank
dc.format.extent181-188
dc.language.isoen
dc.rightsCopyrighted; all rights reserved
dc.subjectHybrids
dc.subjectInbred Lines
dc.subjectCluster Sampling
dc.subjectPopulation
dc.subjectPopulation Structure
dc.subjectGenetic Diversity
dc.subjectPolymorphism
dc.subjectNucleotide Sequence
dc.titleAssessment of genetic diversity among low-nitrogen-tolerant early generation maize inbred lines using SNP markers
dc.typeJournal Article
dc.description.versionPeer Review
cg.contributor.crpMaize
cg.contributor.crpRoots, Tubers and Bananas
cg.contributor.affiliationInternational Institute of Tropical Agriculture
cg.contributor.affiliationUniversity of Ibadan
cg.coverage.regionAfrica
cg.coverage.regionWest Africa
cg.coverage.countryNigeria
cg.creator.identifierSam AJALA: 0000-0002-8955-408X
cg.creator.identifierMelaku Gedil: 0000-0002-6258-6014
cg.researchthemeBIOTECH & PLANT BREEDING
cg.isijournalISI Journal
cg.authorship.typesCGIAR and developing country institute
cg.iitasubjectGenetic Improvement
cg.iitasubjectPlant Breeding
cg.iitasubjectPlant Genetic Resources
cg.journalSouth African Journal of Plant and Soil
cg.howpublishedFormally Published
cg.accessibilitystatusLimited Access
local.dspaceid106577
cg.targetaudienceScientists
cg.identifier.doihttps://dx.doi.org/10.1080/02571862.2018.1537010


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