Gains in grain yield of extra-early maize during three breeding periods under drought and rain-fed conditions

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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.contributor.affiliationUniversity of Ghanaen
cg.contributor.crpMaize
cg.contributor.crpRoots, Tubers and Bananas
cg.coverage.countryNigeria
cg.coverage.iso3166-alpha2NG
cg.coverage.regionAfrica
cg.coverage.regionWestern Africa
cg.creator.identifierBAFFOUR BADU-APRAKU: 0000-0003-0113-5487
cg.creator.identifierRobert Asiedu: 0000-0001-8943-2376
cg.howPublishedFormally Publisheden
cg.identifier.doihttps://doi.org/10.2135/cropsci2018.03.0168en
cg.identifier.iitathemeBIOTECH & PLANT BREEDING
cg.isijournalISI Journalen
cg.issn0011-183Xen
cg.issue6en
cg.journalCrop Scienceen
cg.reviewStatusPeer Reviewen
cg.subject.iitaMAIZEen
cg.subject.iitaPLANT BREEDINGen
cg.volume58en
dc.contributor.authorBadu-Apraku, Baffouren
dc.contributor.authorTalabi, A.O.en
dc.contributor.authorIfie, B.E.en
dc.contributor.authorChabi, Y.en
dc.contributor.authorObeng-Antwi, K.en
dc.contributor.authorHaruna, A.en
dc.contributor.authorAsiedu, Roberten
dc.date.accessioned2019-02-15T13:46:30Zen
dc.date.available2019-02-15T13:46:30Zen
dc.identifier.urihttps://hdl.handle.net/10568/99456
dc.titleGains in grain yield of extra-early maize during three breeding periods under drought and rain-fed conditionsen
dcterms.abstractDrought is a key maize (Zea mays L.) production constraint in sub-Saharan Africa. Fourteen, fifteen, and twenty-five extra-early maturing maize cultivars, with varying Striga resistance and drought and low soil N tolerance, were developed from 1995 to 2000 (Period 1), 2001 to 2006 (Period 2), and 2007 to 2012 (Period 3), respectively. The objectives of this study were to examine yield gains in the cultivars and to investigate inter-trait relationships and yield stability under six drought and 17 rainfed conditions in West Africa from 2013 to 2016. Annual rate of yield increase across cultivars was 0.034 (3.28%) and 0.068 Mg ha−1 (2.25%), whereas yield gains per period were 0.17 and 0.38 Mg ha−1 under drought and rainfed environments, respectively. Yield gains under drought and rainfed environments were related to prolonged flowering period, increased plant and ear heights, improved stalk lodging, and ear and plant aspects, whereas delayed leaf senescence and increased number of ears per plant accompanied yield improvement under drought only. Ear aspect and number of ears per plant were primary contributors to yield and could be used as selection criteria for yield enhancement under drought and rainfed conditions. High-yielding and stable cultivars across all environments based on additive main effects and multiplicative interaction (AMMI) biplot included ‘2004 TZEE-Y Pop STR C4’ and ‘TZEE-W Pop STR BC2 C0’ of Period 2 and ‘2009 TZEE-W STR’, ‘TZEE-Y STR 106’, ‘TZEE-W STR 107’, and ‘TZEE-W DT C0 STR C5’ of Period 3. These cultivars could be commercialized to improve food self-sufficiency in sub-Saharan Africa.en
dcterms.accessRightsOpen Access
dcterms.audienceScientistsen
dcterms.available2018-08-30
dcterms.bibliographicCitationBadu-Apraku, B., Talabi, A.O., Ifie, B.E., Chabi, Y., Obeng-Antwi, K., Haruna, A. & Asiedu, R. (2018). Gains in grain yield of extra-early maize during three breeding periods under drought and rain-fed conditions. Crop Science, 58(6), 2399-2412.en
dcterms.extent2399-2412en
dcterms.issued2018-11
dcterms.languageen
dcterms.licenseCC-BY-4.0
dcterms.publisherWileyen
dcterms.subjectmaizeen
dcterms.subjectdroughten
dcterms.subjectfood surplusen
dcterms.subjectsubsaharan africaen
dcterms.subjectnigeriaen
dcterms.typeJournal Article

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