Yield gains in extra-early maize cultivars of three breeding eras under multiple environments

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dc.creatorBadu-Apraku, Baffour
dc.creatorYallou, C.G.
dc.creatorObeng-Antwi, K.
dc.creatorAlidu, H.
dc.creatorTalabi, A.O.
dc.creatorAnnor, B.
dc.creatorOyekunle, M.
dc.creatorAkaogu, I.C.
dc.creatorAderounmu, M.
dc.date2017-03
dc.date2017-02-22T09:56:25Z
dc.date2017-02-22T09:56:25Z
dc.date.accessioned2026-06-27T16:05:18Z
dc.descriptionAvailability of extra-early maize cultivars has facilitated the expansion of maize production into savannas of West and Central Africa (WCA). Fifty-six extra-early maize cultivars of three breeding eras;1995 to 2000, 2001 to 2006, and 2007 to 2012 were evaluated for 2 yr under 24 multiple-stress and 28 non-stress environments in WCA. Objectives of the study were to determine genetic improvement in grain yield of cultivars developed during the breeding eras, and identify high-yielding and s multiple-stress and non-stress environments. Yield gains from era 1 to era 3 under multiple stresses was associated with increased days to anthesis, reduced stalk lodging, and improved husk cover. Cultivars 2004 TZEE-Y Pop STR C4, TZEE-W Pop STR QPM C0, and TZEE-W Pop STR BC2 C0 of era 2; and TZEE-W STR 107 BC1, TZEE-W Pop STR C5, and 2012 TZEE-Y DT STR C5 of era 3 were high-yielding and stable across multiple-stress environments while 98 Syn EE-W from era 1, FERKE TZEE-W STR, TZEE-W Pop STR C3, and TZEE-Y Pop STR QPM C0 from era 2, and TZEE-W Pop STR C5, 2009 TZEE-OR2 STR QPM, 2009 TZEE-W STR, TZEE-Y STR 106, and TZEE-W DT C0 STR C5 from era 3 were outstanding across non-stress environments and should be tested extensively and commercialized. Considerable improvement has been made in breeding for multiple-stress tolerant extra-early maize cultivars.
dc.formatapplication/pdf
dc.identifierhttps://hdl.handle.net/10568/79972
dc.identifier.urihttp://hdl.handle.net/123456789/122155
dc.languageen
dc.publisherWiley
dc.rightsOpen Access
dc.sourceBadu-Apraku, B., Yallou, C.G., Obeng-Antwi, K., Alidu, H., Talabi, A.O., Annor, B., ... & Aderounmu, M. (2017). Yield gains in extra-early maize cultivars of three breeding eras under multiple environments. Agronomy Journal, 109(2), 1-14.
dc.subjectmaize
dc.subjectstriga hermonthica
dc.subjectdrought
dc.subjectdrought tolerance
dc.subjectextra-early maize cultivars
dc.subjectsoil fertility
dc.subjectgenomic resources
dc.titleYield gains in extra-early maize cultivars of three breeding eras under multiple environments
dc.typeJournal Article

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Instituto Internacional de Agricultura Tropical (IITA)