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    State of ex situ conservation of landrace groups of 25 major crops

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    Journal Article (6.449Mb)
    Date
    2022
    Author
    Ramirez-Villegas, J.
    Khoury, C.K.
    Achicanoy, H.A.
    Diaz, M.V.
    Mendez, A.C.
    Sosa, C.C.
    Kehel, Z.
    Guarino, L.
    Abberton, M.
    Aunario, J.
    Al Awar, B.
    Alarcon, J.C.
    Amri, A.
    Anglin, N.L.
    Azevedo, V.
    Aziz, K.
    Capilit, G.
    Chavez, O.
    Chebotarov, D.
    Costich, D.
    Debouck, D.G.
    Ellis, D.
    Falalou, H.
    Fiu, A.
    Ghanem, M.E.
    Giovannini, P.
    Goungoulou, A.J.
    Gueye, B.
    El Hobyb, A.I.
    Jamnadass, R.
    Jones, C.S.
    Kpeki, B.
    Lee, J.S.
    McNally, K.
    Muchugi, A.
    Ndjiondjop, M.
    Oyatomi, O.
    Payne, T.
    Ramachandran, S.
    Rossel, G.
    Roux, N.
    Ruas, M.
    Sansaloni, C.
    Sardos, J.
    Setiyono, T.D.
    Tchamba, M.
    Van den Houwe, I.
    Velazquez, J.A.
    Venuprasad, R.
    Wenzl, P.
    Yazbek, M.
    Zavala, C.
    Type
    Journal Article
    Review Status
    Peer Review
    Target Audience
    Scientists
    Metadata
    Show full item record
    Abstract/Description
    Crop landraces have unique local agroecological and societal functions and offer important genetic resources for plant breeding. Recognition of the value of landrace diversity and concern about its erosion on farms have led to sustained efforts to establish ex situ collections worldwide. The degree to which these efforts have succeeded in conserving landraces has not been comprehensively assessed. Here we modelled the potential distributions of eco-geographically distinguishable groups of landraces of 25 cereal, pulse and starchy root/tuber/fruit crops within their geographic regions of diversity. We then analysed the extent to which these landrace groups are represented in genebank collections, using geographic and ecological coverage metrics as a proxy for genetic diversity. We find that ex situ conservation of landrace groups is currently moderately comprehensive on average, with substantial variation among crops; a mean of 63% ± 12.6% of distributions is currently represented in genebanks. Breadfruit, bananas and plantains, lentils, common beans, chickpeas, barley and bread wheat landrace groups are among the most fully represented, whereas the largest conservation gaps persist for pearl millet, yams, finger millet, groundnut, potatoes and peas. Geographic regions prioritized for further collection of landrace groups for ex situ conservation include South Asia, the Mediterranean and West Asia, Mesoamerica, sub-Saharan Africa, the Andean mountains of South America and Central to East Asia. With further progress to fill these gaps, a high degree of representation of landrace group diversity in genebanks is feasible globally, thus fulfilling international targets for their ex situ conservation.
    https://dx.doi.org/10.1038/s41477-022-01144-8
    Multi standard citation
    Permanent link to this item
    https://hdl.handle.net/20.500.12478/7735
    IITA Authors ORCID
    Michael Abbertonhttps://orcid.org/0000-0003-2555-9591
    Badara GUEYEhttps://orcid.org/0000-0003-3157-8772
    Olaniyi Oyatomihttps://orcid.org/0000-0003-3094-374X
    Digital Object Identifier (DOI)
    https://dx.doi.org/10.1038/s41477-022-01144-8
    Research Themes
    Biotech and Plant Breeding
    IITA Subjects
    Agronomy; Banana; Biodiversity; Food Security; Genetic Improvement; Plant Breeding; Plant Genetic Resources
    Agrovoc Terms
    Crops; Agroecology; Plant Breeding; Biodiversity; Ex-Situ Conservation; Gene Banks
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    Headquarters and Western Africa Hub
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