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    White Guinea yam (Dioscorea rotundata Poir.) landraces trait profiling and setting benchmark for breeding programs in the Republic of Benin

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    Journal Article (1.596Mb)
    Date
    2022
    Author
    Loko, Y.
    Gbemavo, C.
    Agre, A.P.
    Dassou, A.G.
    Yelome, O.I.
    Idossou, R.
    Afoha, S.A.P.
    Dadonougbo, E.
    Fakorede, J.
    Dansi, A.
    Type
    Journal Article
    Review Status
    Peer Review
    Target Audience
    Scientists
    Metadata
    Show full item record
    Abstract/Description
    To meet the high demand for white Guinea yam, there is a need to develop and release improved varieties to farmers. Unfortunately, low rate of adoption of most of the improved yam varieties by both producers and consumers was observed. Information regarding agronomic characteristics and food qualities of popular white Guinea yam landraces with high market value are not available to establish minimum standards to be considered by breeding programs. To fill this gap, surveys using rural appraisal tools were carried out in 20 villages and 16 markets throughout Benin. Data on the agronomic performance suggested that for an improved variety to be adopted by Beninese farmers it should have a minimum yield of 4.16 ± 0.15 kg per mound, and average number of marketable tubers of 1.23 ± 0.05, a mean tuber length of 36.41 ± 1.22 cm, and a minimum diameter of 25.44 ± 1.16 cm. The sensorial attributes for boiled and pounded tubers of this improved variety should have minimum score of 3.16 for texture, 0.75 for softness, 3.75 for elasticity, and 1.34 for colour during the sensory evaluation. The improved variety must also have a minimum average severity score of 1.1 for yam mosaic virus disease, 1.33 for anthracnose and 1 for nematodes. Landraces Amoula, Laboko, and Djilaadja should be considered as the standard for yield, sensory attributes, and tolerance to pest and diseases while landraces Danwari, Kodjewe, Mondji, and Gnidou should be characterized as possessing good flowering and fruit setting capacities for breeding programs.
    https://dx.doi.org/10.1371/journal.pone.0273043
    Multi standard citation
    Permanent link to this item
    https://hdl.handle.net/20.500.12478/7743
    IITA Authors ORCID
    Paterne AGREhttps://orcid.org/0000-0003-1231-2530
    Digital Object Identifier (DOI)
    https://dx.doi.org/10.1371/journal.pone.0273043
    Research Themes
    Biotech and Plant Breeding
    IITA Subjects
    Agronomy; Climate Change; Food Security; Plant Breeding; Plant Production; Socioeconomy; Yam
    Agrovoc Terms
    Yams; Dioscorea; Food Security; Climate Change; Economic Value; White Guinea Yam
    Regions
    Africa; West Africa
    Countries
    Benin (Dahomey)
    Hubs
    Headquarters and Western Africa Hub
    Journals
    PLoS ONE
    Collections
    • Journal and Journal Articles4835
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