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    A multivariate analysis of growth and development parameters of the legume pad borer, Maruca testulalis, on variably resistant cowpea cultivars

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    U96SerIitaRapportNothomNodev.pdf (4.557Mb)
    Date
    1993
    Author
    Oghiakhe, S.
    Odulaja, A.
    Type
    Journal Article
    Metadata
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    Abstract/Description
    Principal component analysis was employed to study the variation patterns in 18 cowpea cultivars developed for resistance to Maruca testulalis Geyer (Lepidoptera: Pyralidae) based on 7 developmental parameters of the pest on floral buds, flowers and sliced pods. On the whole, three developmental parameters: percentage pupation (V2), percentage emergence (V5) and growth index (V7) were the most important for the grouping of the cultivars with respect to M. testulalis damage. However, out of the three parameters, growth index (V7) had the highest factor score. Using the cluster analysis technique, the cultivars were sorted into five distinct groups for each part. The importance of these findings in the determination of protection periods for particular cultivars and cultural control studies of M. testulalis in cowpea are discussed.
    https://doi.org/10.1111/j.1570-7458.1993.tb00719.x
    Multi standard citation
    Permanent link to this item
    https://hdl.handle.net/20.500.12478/4533
    Digital Object Identifier (DOI)
    https://doi.org/10.1111/j.1570-7458.1993.tb00719.x
    IITA Subjects
    Grain Legumes; Cowpea; Plant Diseases; Research Method
    Agrovoc Terms
    Cowpeas; Legumes; Resistance Varieties; Component Analysis
    Regions
    Africa; West Africa
    Countries
    Nigeria
    Collections
    • Journal and Journal Articles4835
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