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    Testcross performance and combining ability of early maturing maize inbreds under multiple-stress environments

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    Testcross performance and combining ability of early maturing maize.pdf (1.427Mb)
    Date
    2019
    Author
    Annor, B.
    Badu-Apraku, B.
    Nyadanu, D.
    Akromah, R.
    Fakorede, M.A.
    Type
    Journal Article
    Target Audience
    Scientists
    Metadata
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    Abstract/Description
    Availability of multiple-stress tolerant maize is critical for improvement in maize production in West and Central Africa (WCA). A study was carried out to (i) assess a set of inbred lines for combining ability under stressed and optimal conditions, (ii) determine the performance of the testcrosses under different conditions, and (iii) identify outstanding hybrids across the conditions. Two hundred and five testcrosses were planted with five hybrid checks under Striga-infested, low soil nitrogen, drought and optimal conditions between 2015 and 2016 in Nigeria. The grain yield inheritance under optimal condition was largely regulated by additive gene effect whereas non-additive gene effects largely regulated grain yield under the three stresses. Four of the inbreds had significant positive general combining ability effects each under low N and drought, and three under Striga infestation for grain yield. The inbreds could be vital sources of beneficial alleles for development and improvement of tropical yellow maize hybrids and populations. Hybrids TZEI 443 x ENT 13 and TZEI 462 x TZEI 10 were high yielding and stable; they out-performed the three early maturing released hybrids in WCA. The new hybrids should be extensively assessed and released in the sub-region to improve food security.
    https://dx.doi.org/10.1038/s41598-019-50345-3
    Multi standard citation
    Permanent link to this item
    https://hdl.handle.net/20.500.12478/6503
    Non-IITA Authors ORCID
    BAFFOUR BADU-APRAKUhttps://orcid.org/0000-0003-0113-5487
    Digital Object Identifier (DOI)
    https://dx.doi.org/10.1038/s41598-019-50345-3
    Research Themes
    BIOTECH & PLANT BREEDING
    IITA Subjects
    Food Security; Maize; Plant Breeding; Plant Genetic Resources
    Agrovoc Terms
    Maize; Food Security; Striga; Hybrids; West Africa; Inbred Lines; Stress
    Regions
    Africa; West Africa
    Countries
    Mali; Nigeria
    Journals
    Scientific Reports
    Collections
    • Journal and Journal Articles4842
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