Gains in grain yield of early maize cultivars developed during three breeding eras under multiple environments

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cg.authorship.typesCGIAR and developing country instituteen
cg.contributor.affiliationInternational Institute of Tropical Agricultureen
cg.contributor.affiliationInstitut National des Recherches Agricoles du Béninen
cg.contributor.affiliationCouncil for Scientific and Industrial Research, Ghanaen
cg.coverage.countryNigeriaen
cg.coverage.iso3166-alpha2NGen
cg.coverage.regionAfricaen
cg.coverage.regionWest and Central Africaen
cg.coverage.regionWestern Africaen
cg.howPublishedFormally Publisheden
cg.identifier.doihttps://doi.org/10.2135/cropsci2013.11.0783en
cg.isijournalISI Journalen
cg.issn0011-183Xen
cg.issue2en
cg.journalCrop Scienceen
cg.reviewStatusPeer Reviewen
cg.subject.iitaMAIZEen
cg.volume55en
dc.contributor.authorBadu-Apraku, Baffouren
dc.contributor.authorFakorede, M.A.B.en
dc.contributor.authorOyekunle, M.en
dc.contributor.authorYallou, G.C.en
dc.contributor.authorObeng-Antwi, K.en
dc.contributor.authorHaruna, A.en
dc.contributor.authorUsman, I.en
dc.contributor.authorAkinwale, R.en
dc.date.accessioned2016-07-11T08:41:39Zen
dc.date.available2016-07-11T08:41:39Zen
dc.identifier.urihttps://hdl.handle.net/10568/76064
dc.titleGains in grain yield of early maize cultivars developed during three breeding eras under multiple environmentsen
dcterms.abstractMaize (Zea mays L.), an important staple crop in West and Central Africa (WCA), has enormous potential to reduce food insecurity in this subregion. Research covering three periods or eras of breeding has been conducted to develop cultivars resistant/tolerant to three maize stress factors: Striga parasitism, drought, and low soil nitrogen. A study was conducted under optimal or natural growing environments at 35 locations in WCA for 2 yr to determine genetic improvement in grain yield of the maize cultivars developed during the three breeding periods: 1988–2000 (period 1), 2001–2006 (period 2), and 2007–2010 (period 3). The average rate of increase in grain yield under optimum growing conditions was 40 kg ha?1 yr?1 with a genetic gain of 1.3% yr?1, which was slightly higher than the gain of 30 kg ha?1 yr?1, an annual genetic gain of 1.2% across 16 stress environments. It was concluded that substantial improvement in the yield potential of early maize under relatively nonstress environmental conditions has been made in this subregion by breeding for stress tolerance during the past three decades. The varieties EV DT-W 2008 STR, 2009 DTE-Y STR Syn, and TZE-W DT C2 STR, all from the latest era of improvement, were identified as the highest yielding and most stable cultivars and should be promoted to contribute to food security in this subregion.en
dcterms.accessRightsLimited Accessen
dcterms.available2015-03-01en
dcterms.bibliographicCitationBadu-Apraku, B., Fakorede, M.A.B., Oyekunle, M., Yallou, G.C., Obeng-Antwi, K., Haruna, A., ... & Akinwale, R. (2015). Gains in grain yield of early maize cultivars developed during three breeding eras under multiple environments. Crop Science, 55(2), 527-539.en
dcterms.descriptionPublished online January 9, 2015en
dcterms.extentp. 527-539en
dcterms.issued2015-03en
dcterms.languageenen
dcterms.licenseCopyrighted; all rights reserveden
dcterms.publisherWileyen
dcterms.subjectgenotype environment interactionen
dcterms.subjectmaizeen
dcterms.subjectcultivarsen
dcterms.typeJournal Articleen

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