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    Unravelling the effect of provitamin A enrichment on agronomic performance of tropical maize hybrids

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    Journal Article (1.050Mb)
    Date
    2021-07-31
    Author
    Menkir, A.
    Dieng, I.
    Mengesha Abera, W.
    Meseka, S.K.
    Maziya-Dixon, B.
    Alamu, E.O.
    Bossey, B.
    Muhyideen, O.
    Ewool, M.
    Coulibaly, M.
    Type
    Journal Article
    Review Status
    Peer Review
    Target Audience
    Scientists
    Metadata
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    Abstract/Description
    Maize is consumed in different traditional diets as a source of macro- and micro-nutrients across Africa. Significant investment has thus been made to develop maize with high provitamin A content to complement other interventions for alleviating vitamin A deficiencies. The current breeding focus on increasing β-carotene levels to develop biofortified maize may affect the synthesis of other beneficial carotenoids. The changes in carotenoid profiles, which are commonly affected by environmental factors, may also lead to a trade-off with agronomic performance. The present study was therefore conducted to evaluate provitamin A biofortified maize hybrids across diverse field environments. The results showed that the difference in accumulating provitamin A and other beneficial carotenoids across variable growing environments was mainly regulated by the genetic backgrounds of the hybrids. Many hybrids, accumulating more than 10 µg/g of provitamin A, produced higher grain yields (>3600 kg/ha) than the orange commercial maize hybrid (3051 kg/ha). These hybrids were also competitive, compared to the orange commercial maize hybrid, in accumulating lutein and zeaxanthins. Our study showed that breeding for enhanced provitamin A content had no adverse effect on grain yield in the biofortified hybrids evaluated in the regional trials. Furthermore, the results highlighted the possibility of developing broadly adapted hybrids containing high levels of beneficial carotenoids for commercialization in areas with variable maize growing conditions in Africa.
    https://dx.doi.org/10.3390/plants10081580
    Multi standard citation
    Permanent link to this item
    https://hdl.handle.net/20.500.12478/7209
    IITA Authors ORCID
    Abebe Menkirhttps://orcid.org/0000-0002-5907-9177
    Wende Mengeshahttps://orcid.org/0000-0002-2239-7323
    SILVESTRO MESEKAhttps://orcid.org/0000-0003-1004-2450
    Busie Maziya-Dixonhttps://orcid.org/0000-0003-2014-2201
    Alamu Emmanuel Oladejihttps://orcid.org/0000-0001-6263-1359
    Digital Object Identifier (DOI)
    https://dx.doi.org/10.3390/plants10081580
    Research Themes
    Biotech and Plant Breeding; Nutrition and Human Health
    IITA Subjects
    Agronomy; Baseline Survey; Food Security; Maize
    Agrovoc Terms
    Provitamins; Carotenoids; Stability; Adaptability; Maize
    Regions
    Africa; West Africa
    Countries
    Nigeria
    Hubs
    Southern Africa Hub; Headquarters and Western Africa Hub
    Journals
    Plants
    Collections
    • Journal and Journal Articles4835
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