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    Assessing performance of white endosperm testers with varying resistance reactions to Striga (Striga hermonthica) for evaluating resistant maize (Zea mays) inbred lines

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    Journal Article (1.606Mb)
    Date
    2021-07-15
    Author
    Afolabi, S.
    Menkir, A.
    Oyekunle, M.
    Abdullahi, U.
    Gedil, M.
    Meseka, S.
    Mengesha Abera, W.
    Type
    Journal Article
    Review Status
    Peer Review
    Target Audience
    Scientists
    Metadata
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    Abstract/Description
    Identification of testers is crucial for hybrid maize breeding programme. However, limited information is available about ideal testers for characterising the combining ability of Striga resistant maize inbreds. This study was conducted to assess the relative value of three inbred testers with varying resistance reactions to Striga for determining the combining ability of Striga resistant inbreds. Ninety testcrosses involving 30 Striga resistant inbreds and three testers were evaluated under artificial and natural Striga infestation and non-infested conditions at two locations for 2 years. Lines x tester interaction was significant (p ≤ .05) for most traits, indicating differential ranking of lines by the testers. The GCA effects of testers for most traits were high, highlighting the predominance of additive gene action in controlling the overall performance of testcrosses. The resistant and tolerant testers exhibited desirable GCA effects, broader testcross performance, greater genetic variances and consistent ranking of testcrosses under both growing conditions than the susceptible tester. These testers can be successfully used for identifying superior Striga resistant inbreds to develop high yielding and resistant hybrids for commercialization.
    https://dx.doi.org/10.1111/pbr.12951
    Multi standard citation
    Permanent link to this item
    https://hdl.handle.net/20.500.12478/7198
    IITA Authors ORCID
    Abebe Menkirhttps://orcid.org/0000-0002-5907-9177
    Melaku Gedilhttps://orcid.org/0000-0002-6258-6014
    SILVESTRO MESEKAhttps://orcid.org/0000-0003-1004-2450
    Wende Mengeshahttps://orcid.org/0000-0002-2239-7323
    Digital Object Identifier (DOI)
    https://dx.doi.org/10.1111/pbr.12951
    Research Themes
    Biotech and Plant Breeding
    IITA Subjects
    Aflatoxin; Agronomy; Maize; Plant Breeding
    Agrovoc Terms
    Hybrids; Inbred lines; Maize; Striga hermonthica
    Regions
    Africa; West Africa
    Countries
    Nigeria
    Hubs
    Headquarters and Western Africa Hub
    Journals
    Plant Breeding
    Collections
    • Journal and Journal Articles4835
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