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    Effects of cassava pubescene on the behaviour, postembryonic development and reproduction of the cassava mealybug, Phenacoccus manihoti matileferrero (Homoptera: pseudococcidae)

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    Date
    1989
    Author
    Kasu, T.
    Odebiyi, J.
    Lema, K.
    Type
    Journal Article
    Metadata
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    Abstract/Description
    Role of trichome density in cassava resistance to mealybug, Phenacoccus manihoti Matile-Ferrero was evaluated on the apex, the first expanded leaf and the stem in pubescent and glabrous cassava varieties. Pubescence significantly retarded the rate of settling and establishment of P. manihoti. The weight of the developing larvae was also affected becoming more pronounced at the pre-ovipositing adult stage. However, the relationship between pubescence and P. manihoti weight was not significant. Moreover, the significant differences in weight at the preovipositing adult stage was not reflected in the corresponding fecundity on the glabrous and pubescent varieties. Pubescence accounted for only 18% of the differences in observed fecundity. There was also no significant difference in the development period of the mealybug on glabrous and pubescent varieties. Pubescence appeared to be a mechanical irritant only.
    https://doi.org/10.1017/S1742758400010262
    Multi standard citation
    Permanent link to this item
    https://hdl.handle.net/20.500.12478/5014
    Digital Object Identifier (DOI)
    https://doi.org/10.1017/S1742758400010262
    IITA Subjects
    Pests Of Plants; Cassava; Food Security; Plant Production; Disease Control; Plant Genetic Resources
    Agrovoc Terms
    Cassava; Mealybugs; Feeding; Biological Control; Genetic Resistance
    Regions
    Africa; West Africa
    Countries
    Nigeria
    Collections
    • Journal and Journal Articles4835
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