• 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?

    Distribution and virulence of fungal species isolated from yam (Dioscorea spp.) tubers in three agroecological zones of Nigeria

    Thumbnail
    View/Open
    S19ArtDaniaDistributionInthomDev.pdf (1.248Mb)
    Date
    2019-07-12
    Author
    Dania, V.O.
    Fadina, O.O.
    Ayodele, M.
    Kumar, P.L.
    Type
    Journal Article
    Target Audience
    Scientists
    Metadata
    Show full item record
    Abstract/Description
    Field surveys were conducted in 2012 and 2013 to evaluate the distribution and virulence of fungal isolates associated with tuber rot disease among yam (Dioscorea spp.) producing agroecological zones (AEZs) of Nigeria. A total of 70 and 66 farmers’ fields were surveyed in 2012 and 2013, respectively among three yam species, Dioscorea rotundata, D. alata and D. cayenensis. Fifteen rotted samples were randomly collected per each yam species in fourteen districts across the humid rainforest (HF), the derived savanna (DS) and the southern Guinea savanna (SGS) agroecologies. Twenty-one fungal species were isolated in the HF, 18 species in the DS and 16 in the SGS. The highest rot severity was in HF agroecology in the D. rotundata which varied from 27.2% to 65.7% in 2012 and from 21.1 to 57.4% in 2013, while the SGS agroecology had the least severity. Lasiodiplodia theobromae was the most virulent pathogen with lesion diameter of 26.8–42.1 mm at 14 days after inoculation. Findings provide baseline information for the formulation of management strategies for yam tuber rot disease in Nigeria.
    https://dx.doi.org/10.1080/09670874.2019.1629041
    Multi standard citation
    Permanent link to this item
    https://hdl.handle.net/20.500.12478/6129
    Non-IITA Authors ORCID
    P. Lava Kumarhttps://orcid.org/0000-0003-4388-6510
    Digital Object Identifier (DOI)
    https://dx.doi.org/10.1080/09670874.2019.1629041
    Research Themes
    PLANT PRODUCTION & HEALTH
    IITA Subjects
    Plant Diseases; Plant Health; Plant Production; Yam
    Agrovoc Terms
    Lesions; Pathogens; Field Experiments; Yams; Nigeria; Dioscorea Rotundata; Agroecology; Virulence
    Regions
    Africa; West Africa
    Countries
    Nigeria
    Journals
    International Journal of Pest Management
    Collections
    • Journal and Journal Articles4835
    copyright © 2019  IITASpace. All rights reserved.
    IITA | Open Access Repository