• Contact Us
    • Send Feedback
    • Login
    View Item 
    •   Home
    • Journal and Journal Articles
    • Journal and Journal Articles
    • View Item
    •   Home
    • Journal and Journal Articles
    • Journal and Journal Articles
    • View Item
    JavaScript is disabled for your browser. Some features of this site may not work without it.

    Browse

    Whole Repository
    CollectionsIssue DateRegionCountryHubAffiliationAuthorsTitlesSubject
    This Sub-collection
    Issue DateRegionCountryHubAffiliationAuthorsTitlesSubject

    My Account

    Login

    Welcome to the International Institute of Tropical Agriculture Research Repository

    What would you like to view today?

    Diagnosis of yam viruses

    Thumbnail
    View/Open
    S98ArtHughesDiagnosisInthomNodev.pdf (2.653Mb)
    Date
    1998
    Author
    Hughes, J.
    Dongo, L.
    Ng, S.Y.C.
    Type
    Journal Article
    Metadata
    Show full item record
    Abstract/Description
    Diagnosis of virus diseases of yams at the International Institute of Tropical Agriculture (IITA) is based on the use of indicator plants, insect vectors, serological diagnostics, and electron microscopy (EM). Yam I (YVI), yam mosaic (YMV), and Dioscorea dumetorum (DdV) potyviruses even in mixed virus infection. Yam mosaic virus is mechanically transmissible to Nicotiana benthamiana and YVI is vector-transmissible to Vigna unguiculata. The three viruses can be visualised by EM and their identities confirmed serologically. Dioscorea alata badnavirus (DaV) can be graft-transmitted to V, unguiculata and its presence confirmed by EM and serology, Cucumber mosaic cucumovirus (CMV), reported to occur in yams in West is readily mechanically transmissible to a range of indicator plants and can be detected serologically. Other isometric viruses have recently been found in Nigeria, and these can be isolated and differentiated by mechanical and vector transmission to indicator plants. These diagnostic techniques have enabled initiation of surveys of viruses of Dioscorea spp. in West Africa and substantial progress has been made on the production of virus-tested planting material for international distribution.
    Permanent link to this item
    https://hdl.handle.net/20.500.12478/3943
    IITA Subjects
    Yam; Plant Diseases; Cowpea
    Agrovoc Terms
    Dioscorea; Plant Viruses; Diagnosis; Elisa; Microscopy
    Regions
    Africa; West Africa
    Countries
    Nigeria
    Collections
    • Journal and Journal Articles4835
    copyright © 2019  IITASpace. All rights reserved.
    IITA | Open Access Repository