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    Evaluation of African-bred maize germplasm lines for resistance to aflatoxin accumulation

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    Journal Article (204.0Kb)
    
    Authors
    Brown, R.L.
    Williams, W.P.
    Windham, G.L.
    Menkir, A.
    Chen, Z.Y.
    Date
    2016-04
    Language
    en
    Type
    Journal Article
    Review status
    Peer Review
    Accessibility
    Open Access
    Metadata
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    Citation
    Brown, R.L., Williams, W.P., Windham, G.L., Menkir, A., & Chen, Z.Y. (2016). Evaluation of African-bred maize germplasm lines for resistance to aflatoxin accumulation. Agronomy, 6(2), 24, 1-10.
    Permanent link to cite or share this item: https://hdl.handle.net/10568/74318
    DOI: https://dx.doi.org/10.3390/agronomy6020024
    Abstract/Description
    Aflatoxins, produced by the fungus Aspergillus flavus, contaminate maize grain and threaten human food and feed safety. Plant resistance is considered the best strategy for reducing aflatoxin accumulation. Six maize germplasm lines, TZAR101–TZAR106, were released by the International Institute of Tropical Agriculture-Southern Regional Research Center (IITA-SRRC) maize breeding collaboration for use in African National Programs and U.S. maize breeding programs. The present investigation was conducted to evaluate aflatoxin reduction by these lines in a U.S. environment. As germplasm lines, resistance was demonstrated by the lines tested in 2010 and 2014 trials. In 2010, TZAR106 was among the lines with the lowest toxin accumulation, and in 2014, along with TZAR102, supported low aflatoxin. When evaluated as single cross hybrids in 2012, 2013 and 2014, several crosses involving IITA-SRRC lines accumulated low toxin. In 2012, TZAR103 × HBA1 was one of 4 lines with the lowest concentration of aflatoxin. In 2014, five IITA-SRRC hybrids were among the lowest with TZAR102 × Va35 and TZAR102 × LH132 being the two lowest. Results demonstrate significant aflatoxin reduction by IITA-SRRC lines in a U.S. aflatoxin-conducive environment (at Mississippi State University). Further testing in different locations and environments is needed to further evaluate the potential usefulness of these germplasm lines.
    CGIAR Affiliations
    Maize
    AGROVOC Keywords
    AFLATOXINS; HOST RESISTANCE; BREEDING; FIELD TRIALS
    Subjects
    MAIZE
    Countries
    NIGERIA
    Regions
    AFRICA; WEST AFRICA
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    • IITA Journal Articles [3015]

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