• 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?

    Genetic diversity of provitamin-A cassava (Manihot esculenta Crantz) in Sierra Leone

    Thumbnail
    View/Open
    Journal Article (720.3Kb)
    Date
    2020-03-04
    Author
    Kamanda, I.
    Blay, E.T.
    Asante, I.K.
    Danquah, A.
    Ifie, B.E.
    Parkes, E.
    Kulakow, P.
    Rabbi, I.
    Conteh, A.
    Kamara, J.S.
    Mensah, H.K.
    Whyte, J.B.A.
    Sesay, S.
    Type
    Journal Article
    Review Status
    Peer Review
    Target Audience
    Scientists
    Metadata
    Show full item record
    Abstract/Description
    Understanding the genetic diversity among accessions and germplasm is an important requirement for crop development as it allows for the selection of diverse parental combinations for enhancing genetic gain in varietal selection, advancement and release. The study aimed to characterize 183 provitamin A cassava (Manihot esculenta Crantz) accessions and five Sierra Leonean varieties using morphological traits, total carotenoid content and SNP markers to develop a collection for conservation and further use in the cassava breeding program. Both morphological parameters and 5634 SNP markers were used to assess the diversity among the provitamin-A cassava accessions and varieties. Significant differences were observed among the accessions for most of the traits measured. The first five PCs together accounted for 70.44% of the total phenotypic variation based on yield and yield components among the 183 provitamin-A cassava accessions and five Sierra Leonean varieties. The present study showed that provitamin-A cassava accessions in Sierra Leone have moderate to high diversity based on morphological and molecular assessment studies. The similarity index among the 187 and 185 cassava accessions grouped them into 6 and 9 distinct clusters based on morphological and molecular analyses, respectively. A significant positive, but low correlation (r = 0.104; p\0.034), was observed between the two dendrograms. The results obtained will serve as a guide and basis of germplasm management and improvement for total carotenoid content, yield and African cassava mosaic disease resistance in Sierra Leone.
    https://dx.doi.org/10.1007/s10722-020-00905-8
    Multi standard citation
    Permanent link to this item
    https://hdl.handle.net/20.500.12478/7616
    IITA Authors ORCID
    E J Parkeshttps://orcid.org/0000-0003-4063-1483
    Peter Kulakowhttps://orcid.org/0000-0002-7574-2645
    Ismail Rabbihttps://orcid.org/0000-0001-9966-2941
    Digital Object Identifier (DOI)
    https://dx.doi.org/10.1007/s10722-020-00905-8
    Research Themes
    Biotech and Plant Breeding
    IITA Subjects
    Agronomy; Cassava; Disease Control; Plant Breeding; Plant Diseases; Plant Genetic Resources; Plant Production
    Agrovoc Terms
    Cassava; Manihot Esculenta; Morphology; Carotenoids; African Cassava Mosaic Virus; Sierra Leone
    Regions
    Africa; West Africa
    Countries
    Sierra Leone
    Hubs
    Headquarters and Western Africa Hub
    Journals
    Genetic Resources and Crop Evolution
    Collections
    • Journal and Journal Articles4835
    copyright © 2019  IITASpace. All rights reserved.
    IITA | Open Access Repository