• Contact Us
    • Send Feedback
    • Login
    View Item 
    •   Home
    • Journal and Journal Articles
    • Journal and Journal Articles
    • View Item
    •   Home
    • Journal and Journal Articles
    • Journal and Journal Articles
    • View Item
    JavaScript is disabled for your browser. Some features of this site may not work without it.

    Browse

    Whole Repository
    CollectionsIssue DateRegionCountryHubAffiliationAuthorsTitlesSubject
    This Sub-collection
    Issue DateRegionCountryHubAffiliationAuthorsTitlesSubject

    My Account

    Login

    Welcome to the International Institute of Tropical Agriculture Research Repository

    What would you like to view today?

    Full-Sib family selection in maize populations for tolerance to low soil nitrogen

    Thumbnail
    View/Open
    S12ArtAjalaFullsibNothomNodev.pdf (166.8Kb)
    Date
    2012-09
    Author
    Ajala, S.
    Kling, J.
    Menkir, A.
    Type
    Journal Article
    Metadata
    Show full item record
    Abstract/Description
    Improving maize productivity in the savannas of West Africa will depend on improving soil fertility and ensuring the efficient use of inputs and the relevant maize varieties tolerant to low nitrogen (N) that have been developed for this region. Several cycles of full-sib family selection that combine agronomic performance under low N with yield under high N to maximize gains under both environments have been used to improve three such developed populations. Evaluation of different cycles of selection revealed that desirable changes in gene frequencies had taken place after three cycles of selection in two of the three populations, leading to a yield gain of over 200 kg/ha/cycle under 30 kg N/ha and over 270 kg/ha/cycle under 90 kg N/ha. Trends in performance of the third population under low N simply indicated that additional cycles of selection would be required to shift gene frequencies significantly in the direction of increased yield production. This yield gain did not adversely affect other agronomic traits. Therefore, improving maize for tolerance to low soil N in West and Central Africa is feasible without compromising grain yield performance under high-N application.
    http://dx.doi.org/10.1080/15427528.2012.662206
    Multi standard citation
    Permanent link to this item
    https://hdl.handle.net/20.500.12478/1803
    Digital Object Identifier (DOI)
    http://dx.doi.org/10.1080/15427528.2012.662206
    IITA Subjects
    Maize; Agronomy; Soil Fertility
    Agrovoc Terms
    Full-Sib; Selection; Maize; Low-N; Tolerance
    Regions
    Africa; West Africa
    Countries
    Nigeria
    Journals
    Journal of Crop Improvement
    Collections
    • Journal and Journal Articles4836
    copyright © 2019  IITASpace. All rights reserved.
    IITA | Open Access Repository