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    Farmers' perceptions on varietal diversity, trait preferences and diversity management of bush yam ( Dioscorea praehensilis Benth.) in Ghana

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    Journal Article (1.380Mb)
    Date
    2021
    Author
    Adewumi, A.S.
    Asare, P.A.
    Adu, M.O.
    Taah, K.J.
    Akaba, S.
    Mondo, J.
    Agre, A.P.
    Type
    Journal Article
    Review Status
    Peer Review
    Target Audience
    Scientists
    Metadata
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    Abstract/Description
    Bush yam (Dioscorea praehensilis Benth.) is an important food and cash crop species in some West and Central African countries. Unfortunately, several socioeconomic, cultural, nutritional, and agronomic constraints hinder its cultivation, and thus lead to its underutilization and gradual disappearance. To effectively promote its cultivation and utilization, knowledge of its diversity, distribution, management, and farmers’ varietal preferences is necessary. This study, therefore, used a participatory rural appraisal survey to assess such information in 23 villages from three regions of Ghana. A total of 42 D. praehensilis morphotypes were recorded and grouped in seven classes based on the tuber flesh colour. The Shannon diversity index (H’ = 1.88), equitability (0.65), and Margalef species richness (2.53) revealed the presence of moderate diversity and distribution in the surveyed regions. Farmers’ variety trait preferences included mainly the early maturity (21.1%), smooth tuber texture (16.5%), stability in tuber flesh colour (7.86%), good storage aptitude (7.6%), and high tuber productivity (12.8%). In contrast, D. praehensilis production and utilization rates have declined mainly due to poor culinary quality (39.9%) and poor agronomic traits (20.7%) of most morphotypes. Survey results showed that D. praehensilis is largely an in-situ conserved species in Ghana (60.0%). This study provided an insight on D. praehensilis diversity, distribution and farmers’ varietal preferences in Ghana which will guide its genetic resource conservation and plant breeding interventions.
    Acknowledgements
    Authors acknowledge the provision of research fund to the first author by the ACADEMY project. Directorate of Research, Innovation, and Consultancy of the University of Cape Coast is also acknowledged for managing the ACADEMY project. We appreciate all the local bush yam farmers and agricultural extension service personnel at the three regions surveyed in Ghana. We are grateful to local authorities in all surveyed villages for facilitating data collection. We also thank Daniel Nana-Yaw Gyebi and ...
    https://dx.doi.org/10.1016/j.sciaf.2021.e00808
    Multi standard citation
    Permanent link to this item
    https://hdl.handle.net/20.500.12478/7186
    IITA Authors ORCID
    Paterne AGREhttps://orcid.org/0000-0003-1231-2530
    Digital Object Identifier (DOI)
    https://dx.doi.org/10.1016/j.sciaf.2021.e00808
    Research Themes
    Biotech and Plant Breeding
    IITA Subjects
    Agronomy; Food Security; Plant Breeding; Plant Production; Smallholder Farmers; Yam
    Agrovoc Terms
    Dioscorea; Yams; Surveys; Ghana; Farmers; Genetic Resources; Resource Conservation; Participatory Rural Appraisal
    Regions
    Africa; West Africa
    Countries
    Ghana
    Hubs
    Headquarters and Western Africa Hub
    Journals
    Scientific African
    Collections
    • Journal and Journal Articles4835
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