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    Genetic variability, stability and heritability for quality and yield characteristics in provitamin A cassava varieties

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    Journal Article (992.9Kb)
    Date
    2020
    Author
    Peprah, B.B.
    Parkes, E.
    Manu-Aduening, J.
    Kulakow, P.
    van Biljon, A.
    Labuschagne, M.
    Type
    Journal Article
    Review Status
    Peer Review
    Target Audience
    Scientists
    Metadata
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    Abstract/Description
    Cassava is widely consumed in many areas of Africa, including Ghana, and is a major part of most household diets. These areas are characterized by rampant malnutrition, because the tuberous roots are low in nutritional value. Provitamin A biofortified cassava varieties have been developed by the International Institute for Tropical Agriculture, but adoption of these varieties in Ghana will largely depend on their agronomic performance, including fresh root yield, dry matter content, resistance to major pests and diseases, mealiness, starch content and the stability of these traits. Eight provitamin A varieties with two white checks were planted in three environments for two seasons to determine stability and variability among the varieties for important traits. There were significant variations in performance between varieties and between environments for cassava mosaic disease, root number, fresh root yield and starch content. High broad-sense heritability and genetic advance were observed in all traits, except for storage root number, and could be exploited through improvement programs. This study identified the best performing enhanced provitamin A varieties for traits that are key drivers of variety adoption in Ghana. In view of this, some varieties can be recommended for varietal release after on-farm testing. The study also showed the possibility of tapping heterosis after careful selection of parents.
    https://dx.doi.org/10.1007/s10681-020-2562-7
    Multi standard citation
    Permanent link to this item
    https://hdl.handle.net/20.500.12478/7573
    IITA Authors ORCID
    E J Parkeshttps://orcid.org/0000-0003-4063-1483
    Peter Kulakowhttps://orcid.org/0000-0002-7574-2645
    Digital Object Identifier (DOI)
    https://dx.doi.org/10.1007/s10681-020-2562-7
    Research Themes
    Biotech and Plant Breeding; Plant Production and Health
    IITA Subjects
    Agronomy; Cassava; Food Security; Nutrition; Plant Breeding; Plant Health; Plant Production
    Agrovoc Terms
    Provitamins; Cassava; Heritability; Stability; Genetic Gain; Genetic Variation
    Regions
    Africa; West Africa
    Countries
    Ghana; Nigeria
    Hubs
    Headquarters and Western Africa Hub
    Journals
    Euphytica
    Collections
    • Journal and Journal Articles4586
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