Genome-wide association studies of Striga resistance in extra-early maturing quality protein maize inbred lines

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dc.creatorOkunlola, G.
dc.creatorBadu-Apraku, Baffour
dc.creatorAriyo, O.
dc.creatorAgre, A.P.
dc.creatorOffornedo, Q.N.
dc.creatorAyo-Vaughan, M.A.
dc.date2023-02-09
dc.date2023-04-11T07:39:30Z
dc.date2023-04-11T07:39:30Z
dc.date.accessioned2026-06-27T15:50:38Z
dc.descriptionIdentification of genes associated with Striga resistance is invaluable for accelerating genetic gains in breeding for Striga resistance in maize. We conducted a genome-wide association study to identify genomic regions associated with grain yield and other agronomic traits under artificial Striga field infestation. One hundred and forty-one extra-early quality protein maize inbred lines were phenotyped for key agronomic traits. The inbred lines were also genotyped using 49,185 DArTseq markers from which 8,143 were retained for population structure analysis and genome wide-association study. Cluster analysis and population structure revealed the presence of 3 well-defined genetic groups. Using the mixed linear model, 22 SNP markers were identified to be significantly associated with grain yield, Striga damage at 10 weeks after planting, number of emerged Striga plants at 8 and 10 weeks after planting and ear aspect. The identified SNP markers would be useful for breeders for marker-assisted selection to accelerate the genetic enhancement of maize for Striga resistance in sub-Saharan Africa after validation.
dc.formatapplication/pdf
dc.identifierhttps://hdl.handle.net/10568/129941
dc.identifier.urihttp://hdl.handle.net/123456789/115123
dc.languageen
dc.publisherOxford University Press
dc.rightsOpen Access
dc.sourceOkunlola, G., Badu-Apraku, B., Ariyo, O., Agre, P., Offernedo, Q.N. & Ayo-Vaughan, M.A. (2023). Genome-wide association studies of Striga resistance in extra-early maturing quality protein maize inbred lines. G3-Genes Genomes Genetics, 13(2): jkac237, 1-11.
dc.subjectsingle nucleotide polymorphism
dc.subjectstriga hermonthica
dc.subjectmarker-assisted selection
dc.subjectmaize
dc.subjectclimate change
dc.subjectfood security
dc.subjectgenetics
dc.subjectmolecular biology
dc.titleGenome-wide association studies of Striga resistance in extra-early maturing quality protein maize inbred lines
dc.typeJournal Article

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Instituto Internacional de Agricultura Tropical (IITA)