• 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?

    Multiple small-effect alleles of Indica origin enhance high iron-associated stress tolerance in rice under field conditions in west Africa

    Thumbnail
    View/Open
    Journal Article (2.404Mb)
    Date
    2020
    Author
    Melandri, G.
    Sikirou, M.
    Arbelaez, J.D.
    Shittu, A.
    Semwal, V.K.
    Konaté, K.A.
    Maji, A.T.
    Ngaujah, S.A.
    Akintayo, I.
    Govinduraj, V.
    Shi, Y.
    Agosto-Perez, F.J.
    Greenberg, A.J.
    Atlin, G.
    Ramaiah, V.
    McCouch, S.R.
    Type
    Journal Article
    Review Status
    Peer Review
    Target Audience
    Scientists
    Metadata
    Show full item record
    Abstract/Description
    Understanding the genetics of field-based tolerance to high iron-associated (HIA) stress in rice can accelerate the development of new varieties with enhanced yield performance in West African lowland ecosystems. To date, few field-based studies have been undertaken to rigorously evaluate rice yield performance under HIA stress conditions. In this study, two NERICA × O. sativa bi-parental rice populations and one O.sativa diversity panel consisting of 296 rice accessions were evaluated for grain yield and leaf bronzing symptoms over multiple years in four West African HIA stress and control sites. Mapping of these traits identified a large number of QTLs and single nucleotide polymorphisms (SNPs) associated with stress tolerance in the field. Favorable alleles associated with tolerance to high levels of iron in anaerobic rice soils were rare and almost exclusively derived from the indica subpopulation, including the most favorable alleles identified in NERICA varieties. These findings highlight the complex genetic architecture underlying rice response to HIA stress and suggest that a recurrent selection program focusing on an expanded indica genepool could be productively used in combination with genomic selection to increase the efficiency of selection in breeding programs designed to enhance tolerance to this prevalent abiotic stress in West Africa.
    https://dx.doi.org/10.3389/fpls.2020.604938
    Multi standard citation
    Permanent link to this item
    https://hdl.handle.net/20.500.12478/7050
    Digital Object Identifier (DOI)
    https://dx.doi.org/10.3389/fpls.2020.604938
    Research Themes
    Biotech and Plant Breeding
    IITA Subjects
    Agronomy; Food Security; Genetic Improvement; Plant Breeding; Plant Genetic Resources; Plant Production
    Agrovoc Terms
    Iron; Toxicity; Quantitative Trait Loci; Rice; Oryza Sativa; Genomes; Single Nucleotide Polymorphism
    Regions
    Africa; West Africa
    Countries
    Liberia; Nigeria
    Hubs
    Central Africa Hub
    Journals
    Frontiers in Plant Science
    Collections
    • Journal and Journal Articles4835
    copyright © 2019  IITASpace. All rights reserved.
    IITA | Open Access Repository