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    Measurement of the field response of Musa genotypes to Radopholus similis and Helicotylenchus multicinctus and the implications for nematode resistance breeding

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    S10ArtHartmanMeasurementInthomNodev.pdf (128.6Kb)
    Date
    2010
    Author
    Hartman, J.B.
    Vuylsteke, D.
    Speijer, P.R.
    Ssango, F.
    Coyne, D.L.
    Waele, D. de
    Type
    Journal Article
    Target Audience
    Scientists
    Metadata
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    Abstract/Description
    Crop growth and damage parameters (plant growth and yield, root damage and nematode population densities), believed to be associated with resistance of Musa genotypes to nematodes under field conditions, were evaluated in a field trial of 24 Musa genotypes inoculated at planting with a combination of Radopholus similis and Helicotylenchus multicinctus with the objective to identify parameters with strong association with nematode resistance and high heritability. Correlation and path analysis of the association between plant growth, yield, root damage and nematode population densities showed a strong negative association between percentage dead roots, percentage root necrosis, R. similis and H. multicinctus population densities and yield. The strongest negative association was observed between percentage dead roots and yield. Broad-sense genotype heritability estimates demonstrated that heritability estimates for percentage dead roots, number of large lesions and nematode population density were most affected by inoculation with nematodes. These results indicate therefore that effective selection for nematode resistance under field conditions could be obtained by using an index, that includes percentage dead roots, the number of large lesions, and nematode population density.
    Permanent link to this item
    https://hdl.handle.net/20.500.12478/2368
    IITA Subjects
    Plantain; Banana; Agronomy
    Agrovoc Terms
    Bananas; Fields; Path Analysis; Plant Nematodes; Plantains; Yields
    Regions
    Africa; West And Central Africa; East Africa
    Countries
    Uganda
    Journals
    Euphytica
    Collections
    • Journal and Journal Articles5283
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