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    Yield improvement in maize for tolerance to low soil nitrogen

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    Authors
    Ajala, S.
    Olaniyan, A.B.
    Olayiwola, M.O.
    Job, A.O.
    Date Issued
    2018-04
    Date Online
    2018-03
    Language
    en
    Type
    Journal Article
    Review status
    Peer Review
    ISI journal
    Accessibility
    Limited Access
    Usage rights
    Copyrighted; all rights reserved
    Metadata
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    Citation
    Ajala, S.O., Olaniyan, A.B., Olayiwola, M.O. & Job, A.O. (2018). Yield improvement in maize for tolerance to low soil nitrogen. Plant Breeding, 137(2), 118-126.
    Permanent link to cite or share this item: https://hdl.handle.net/10568/92905
    DOI: https://doi.org/10.1111/pbr.12568
    Abstract/Description
    Low soil nitrogen limits maize (Zea mays L.) production in the West and Central African subregion. Levels of residual genetic variability were determined in two low‐N populations using selfed progeny evaluations, and results obtained indicate large genotypic and phenotypic variances for grain yield under both low‐ and high‐N environments for effective selection, while heritability estimates were generally low. Ear aspect and stay green were the most important traits contributing to grain yield for both populations. Selection reduced days to flowering, ASI and ear aspect, but increased plant height and yield. Yield gains of more than 25% occurred for the two populations under both low and high N with the most significant change of 42% occurring in one population under high N.
    CGIAR Author ORCID iDs
    Sam AJALAhttps://orcid.org/0000-0002-8955-408X
    Other CGIAR Affiliations
    Maize
    AGROVOC Keywords
    maize; statistical analysis; soil nitrogen; genetic variability; yield
    Subjects
    MAIZE; PLANT BREEDING; SOIL FERTILITY
    Countries
    Nigeria
    Regions
    Africa; West and Central Africa; Western Africa
    Organizations Affiliated to the Authors
    International Institute of Tropical Agriculture; University of Ibadan
    Investors/sponsors
    African Development Bank
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    • IITA Journal Articles [5024]

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