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    Additive relationships and parentoffspring regression in Musa germplasm with intergeneration genome size polymorphism

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    Date
    2012
    Author
    Tenkouano, A.
    Crouch, J.H.
    Ortiz, R.
    Type
    Journal Article
    Metadata
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    Abstract/Description
    Parent–offspring regression has often been used for the estimation of breeding value and narrow-sense heritability in experimental populations, particularly for diploid species with regular disomic inheritance. With polysomic inheritance, estimates of heritability based on parent–offspring regression are expected to be systematically biased, particularly when intra- and inter-generation ploidy polymorphisms occur as a result of unusual megasporogenesis. Measuring the discrepancy between true and estimated heritability has important theoretical and practical implications for the genetic improvement of plantain and bananas. In this regard, formulas were developed to describe the relationships between parental and filial generations with different ploidy states and this information was used to estimate heritability for several traits of plantains and bananas. This approach may be extended to other polysomic species with similar meiotic behaviour and ploidy polymorphism.
    https://dx.doi.org/10.1016/j.scienta.2011.12.030
    Multi standard citation
    Permanent link to this item
    https://hdl.handle.net/20.500.12478/1559
    Digital Object Identifier (DOI)
    https://dx.doi.org/10.1016/j.scienta.2011.12.030
    IITA Subjects
    Bananas; Plantain
    Agrovoc Terms
    2N Gametes; Additive Relationships; Heritability; Hybrids; Musa Breeding; Ploidy Polymorphism; Polysomic Inheritance
    Regions
    Africa; West Africa
    Countries
    Nigeria
    Journals
    Scientia Horticulturae
    Collections
    • Journal and Journal Articles4475
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