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    Strategies to combat the problem of yam anthracnose disease: status and prospects

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    Journal Article (700.5Kb)
    Date
    2021-10
    Author
    Ntui, V.O.
    Uyoh, E.A.
    Ita, E.E.
    Markson, A.A.A.
    Tripathi, J.
    Okon, N.I.
    Akpan, M.O.
    Phillip, J.O.
    Brisibe, E.A.
    Tripathi, L.
    Ene-Obong, E.O.E.
    Type
    Journal Article
    Review Status
    Peer Review
    Target Audience
    Scientists
    Metadata
    Show full item record
    Abstract/Description
    Yam (Dioscorea spp.) anthracnose, caused by Colletotrichum alatae, is the most devastating fungal disease of yam in West Africa, leading to 50%–90% of tuber yield losses in severe cases. In some instances, plants die without producing any tubers or each shoot may produce several small tubers before it dies if the disease strikes early. C. alatae affects all parts of the yam plant at all stages of development, including leaves, stems, tubers, and seeds of yams, and it is highly prevalent in the yam belt region and other yam-producing countries in the world. Traditional methods adopted by farmers to control the disease have not been very successful. Fungicides have also failed to provide long-lasting control. Although conventional breeding and genomics-assisted breeding have been used to develop some level of resistance to anthracnose in Dioscorea alata, the appearance of new and more virulent strains makes the development of improved varieties with broad-spectrum and durable resistance critical. These shortcomings, coupled with interspecific incompatibility, dioecy, polyploidy, poor flowering, and the long breeding cycle of the crop, have prompted researchers to explore biotechnological techniques to complement conventional breeding to speed up crop improvement. Modern biotechnological tools have the potential of producing fungus-resistant cultivars, thereby bypassing the natural bottlenecks of traditional breeding. This article reviews the existing biotechnological strategies and proposes several approaches that could be adopted to develop anthracnose-resistant yam varieties for improved food security in West Africa.
    https://dx.doi.org/10.1111/mpp.13107
    Multi standard citation
    Permanent link to this item
    https://hdl.handle.net/20.500.12478/7249
    IITA Authors ORCID
    Ntuihttps://orcid.org/0000-0003-4709-8087
    Dr Jaindra Nath Tripathi, Ph.D.https://orcid.org/0000-0002-6366-917X
    Leena Tripathihttps://orcid.org/0000-0001-5723-4981
    Digital Object Identifier (DOI)
    https://dx.doi.org/10.1111/mpp.13107
    Research Themes
    Biotech and Plant Breeding
    IITA Subjects
    Agronomy; Disease Control; Food Security; Plant Breeding; Plant Diseases; Plant Production; Yam
    Agrovoc Terms
    Dioscorea; Diseases; Genomes; Breeding; Yams; Nigeria; Fungal Diseases
    Regions
    Africa; West Africa
    Countries
    Nigeria
    Hubs
    Eastern Africa Hub
    Journals
    Molecular Plant Pathology
    Collections
    • Journal and Journal Articles4835
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