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    Diallel analysis of resistance to rice yellow mottle virus in African rice Oryza glabelrrima Steud

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    Date
    1995
    Author
    Paul, C.
    Ng, N.Q.
    Ladeinde, T.A.
    Type
    Journal Article
    Metadata
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    Abstract/Description
    The genetics of resistance to rice yellow mottle sobemovirus (RYMV) in O. glaberrima was studied in a 6 parent full diallel cross involving 4 resistant and 2 susceptible genotypes. F1 hybrids resulting from crosses between resistant and susceptible genotypes were susceptible. Susceptibility was close to complete dominance over resistance. Estimates of genetic parameters following Hayman's and Griffing's methods indicated that additive gene effects were sigificant and more important than non-additive ones in determining the expression of resistance to RYMV. The high heritability estimates in additive gene action suggested that the pedigree breeding method would be an effective approach to increasing the level of resistance to RYMV in O. glaberrima.
    Permanent link to this item
    https://hdl.handle.net/20.500.12478/5746
    IITA Subjects
    Genetic Improvement; Plant Diseases; Pests Of Plants
    Agrovoc Terms
    Genotypes; Pathogens; Rice Yellow Mottle Virus
    Regions
    Africa; West Africa
    Countries
    Nigeria
    Collections
    • Journal and Journal Articles4835
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