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    Inheritance of Striga hermonthica adaptive traits in an earlymaturing white maize inbred line containing resistance genes from Zea diploperennis

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    U19ArtAkaoguInheritanceInthomDev.pdf (516.8Kb)
    Date
    2019-04-16
    Author
    Akaogu, I.C.
    Badu‐Apraku, B.
    Tongoona, P.
    Ceballos, H.
    Gracen, V.
    Offei, S.K.
    Dzidzienyo, D.
    Type
    Journal Article
    Target Audience
    Scientists
    Metadata
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    Abstract/Description
    Striga hermonthica can cause as high as 100% yield loss in maize depending on soil fertility level, type of genotype, severity of infestation and climatic conditions. Understanding the mode of inheritance of Striga resistance in maize is crucial for introgression of resistance genes into tropical germplasm and deployment of resistant varieties. This study examined the mode of inheritance of resistance to Striga in early‐maturing inbred line, TZdEI 352 containing resistance genes from Zea diploperennis. Six generations, P1, P2, F1, F2, BC1P1 and BC1P2 derived from a cross between resistant line, TZdEI 352 and susceptible line, TZdEI 425 were screened under artificial Striga infestation at Mokwa and Abuja, Nigeria, 2015. Additive‐dominance model was adequate in describing observed variations in the number of emerged Striga plants among the population; hence, digenic epistatic model was adopted for Striga damage. Dominance effects were higher than the additive effects for the number of emerged Striga plants at both locations signifying that non‐additive gene action conditioned inheritance of Striga resistance. Inbred TZdEI 352 could serve as invaluable parent for hybrid development in Striga endemic agro‐ecologies of sub‐Saharan Africa.
    https://dx.doi.org/10.1111/pbr.12707
    Multi standard citation
    Permanent link to this item
    https://hdl.handle.net/20.500.12478/5847
    Non-IITA Authors ORCID
    IJEOMA AKAOGUhttps://orcid.org/0000-0002-8977-5237
    BAFFOUR BADU-APRAKUhttps://orcid.org/0000-0003-0113-5487
    Digital Object Identifier (DOI)
    https://dx.doi.org/10.1111/pbr.12707
    Research Themes
    BIOTECH & PLANT BREEDING
    IITA Subjects
    Genetic Improvement; Plant Breeding
    Agrovoc Terms
    Gene Interaction; Striga Hermonthica; Zea Diploperennis; Zea Mays; Epistasis; Striga; Genes
    Regions
    Africa; West Africa
    Countries
    Nigeria
    Journals
    Plant Breeding
    Collections
    • Journal and Journal Articles4835
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