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

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    U17ArtBaduaprakuYieldInthomDev.pdf (888.2Kb)
    Date
    2017-02-09
    Author
    Badu-Apraku, B.
    Yallou, C.G.
    Obeng-Antwi, K.
    Alidu, H.
    Talabi, A.O.
    Annor, B.
    Oyekunle, M.
    Akaogu, I.C.
    Aderounmu, M.
    Type
    Journal Article
    Target Audience
    Scientists
    Metadata
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    Abstract/Description
    Availability 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.
    http://dx.doi.org/10.2134/agronj2016.10.0566
    Multi standard citation
    Permanent link to this item
    https://hdl.handle.net/20.500.12478/1589
    Digital Object Identifier (DOI)
    http://dx.doi.org/10.2134/agronj2016.10.0566
    IITA Subjects
    Maize; Plant Genetic Resources
    Agrovoc Terms
    Maize; Striga Hermonthica; Drought; Drought Tolerance; Extra-Early Maize Cultivars; Soil Fertility; Genomic Resources
    Regions
    Africa; West Africa
    Countries
    Benin; Cote D'Ivoire; Ghana; Nigeria
    Journals
    Agronomy Journal
    Collections
    • Journal and Journal Articles4835
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