State of ex situ conservation of landrace groups of 25 major crops
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Published:2022-05-09
Issue:5
Volume:8
Page:491-499
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ISSN:2055-0278
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Container-title:Nature Plants
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language:en
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Short-container-title:Nat. Plants
Author:
Ramirez-Villegas JulianORCID, Khoury Colin K.ORCID, Achicanoy Harold A., Diaz Maria Victoria, Mendez Andres C., Sosa Chrystian C.ORCID, Kehel Zakaria, Guarino Luigi, Abberton Michael, Aunario Jorrel, Awar Bashir Al, Alarcon Juan Carlos, Amri Ahmed, Anglin Noelle L., Azevedo Vania, Aziz Khadija, Capilit Grace Lee, Chavez Oswaldo, Chebotarov Dmytro, Costich Denise E.ORCID, Debouck Daniel G., Ellis David, Falalou Hamidou, Fiu Albert, Ghanem Michel EdmondORCID, Giovannini Peter, Goungoulou Alphonse J., Gueye BadaraORCID, Hobyb Amal Ibn El, Jamnadass RamniORCID, Jones Chris S.ORCID, Kpeki BienvenuORCID, Lee Jae-Sung, McNally Kenneth L.ORCID, Muchugi Alice, Ndjiondjop Marie-Noelle, Oyatomi OlaniyiORCID, Payne Thomas S., Ramachandran Senthil, Rossel Genoveva, Roux Nicolas, Ruas Max, Sansaloni CarolinaORCID, Sardos Julie, Setiyono Tri Deri, Tchamba Marimagne, van den Houwe Ines, Velazquez J. Alejandro, Venuprasad Ramaiah, Wenzl Peter, Yazbek Mariana, Zavala Cristian
Abstract
AbstractCrop 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.
Funder
CGIAR Genebank Platform United States Department of Agriculture | National Institute of Food and Agriculture
Publisher
Springer Science and Business Media LLC
Reference64 articles.
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