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    Quantitative trait loci mapping for resistance to maize streak virus in F2:3 population of tropical maize

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    Journal Article (663.1Kb)
    Date
    2020
    Author
    Garcia-Oliveira, A.L.
    Menkir, A.
    Kumar, P.L.
    Azuh, V.
    Jacob, O.O.
    Gedil, M.
    Type
    Journal Article
    Review Status
    Peer Review
    Target Audience
    Scientists
    Metadata
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    Abstract/Description
    Maize streak virus (MSV) continues to be a major biotic constraint for maize production throughout Africa. Concerning the quantitative nature of inheritance of resistance to MSV disease (MSVD), we sought to identify new loci for MSV resistance in maize using F2:3 population. The mapping population was artificially inoculated with viruliferous leafhoppers under screenhouse and evaluated for MSVD resistance. Using 948 DArT markers, we identified 18 quantitative trait loci (QTLs) associated with different components of MSVD resistance accounting for 3.1–21.4% of the phenotypic variance, suggesting that a total of eleven genomic regions covering chromosomes 1, 2, 3, 4, 5 and 7 are probably required for MSVD resistance. Two new genomic regions on chromosome 4 revealed the occurrence of co-localized QTLs for different parameters associated with MSVD resistance. Moreover, the consistent appearance of QTL on chromosome 7 for MSVD resistance is illustrating the need for fine-mapping of this locus. In conclusion, these QTLs could provide additional source for breeders to develop MSV resistance.
    https://dx.doi.org/10.1007/s42976-020-00020-5
    Multi standard citation
    Permanent link to this item
    https://hdl.handle.net/20.500.12478/6840
    IITA Authors ORCID
    Abebe Menkirhttps://orcid.org/0000-0002-5907-9177
    P. Lava Kumarhttps://orcid.org/0000-0003-4388-6510
    Melaku Gedilhttps://orcid.org/0000-0002-6258-6014
    Non-IITA Authors ORCID
    Garcia-Oliveira ALhttps://orcid.org/0000-0001-8561-4172
    Digital Object Identifier (DOI)
    https://dx.doi.org/10.1007/s42976-020-00020-5
    Research Themes
    Biotech and Plant Breeding; Plant Production and Health
    IITA Subjects
    Agronomy; Disease Control; Food Security; Maize; Plant Breeding; Plant Diseases; Plant Health; Plant Production
    Agrovoc Terms
    Maize; Maize Streak Geminivirus; Quantitative Trait Loci; Subsaharan Africa; Disease Resistance
    Regions
    Africa; West Africa
    Countries
    Nigeria
    Hubs
    Headquarters and Western Africa Hub
    Journals
    Cereal Research Communications
    Collections
    • Journal and Journal Articles4835
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