Crop genetic erosion: understanding and responding to loss of crop diversity
Crop diversity underpins the productivity, resilience, and adaptive capacity of agriculture. Loss of this diversity, termed crop genetic erosion, is therefore concerning. While alarms regarding evident declines in crop diversity have been raised for over a century, the magnitude, trajectory, drivers...
| Main Authors: | , , , , , , , , , , , , , , |
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| Format: | Journal Article |
| Language: | Inglés |
| Published: |
Wiley
2022
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| Subjects: | |
| Online Access: | https://hdl.handle.net/10568/115281 |
| _version_ | 1855518138680999936 |
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| author | Khoury, Colin K. Brush, S. Costich, Denise E. Curry, H.A. Haan, Stef de Engels, Johannes M.M. Guarino, Luigi Hoban, Sean Mercer, K.L. Miller, A.J. Nabhan, Gary Paul Perales, H.R. Richards, C. Riggins, C. Thormann, I. |
| author_browse | Brush, S. Costich, Denise E. Curry, H.A. Engels, Johannes M.M. Guarino, Luigi Haan, Stef de Hoban, Sean Khoury, Colin K. Mercer, K.L. Miller, A.J. Nabhan, Gary Paul Perales, H.R. Richards, C. Riggins, C. Thormann, I. |
| author_facet | Khoury, Colin K. Brush, S. Costich, Denise E. Curry, H.A. Haan, Stef de Engels, Johannes M.M. Guarino, Luigi Hoban, Sean Mercer, K.L. Miller, A.J. Nabhan, Gary Paul Perales, H.R. Richards, C. Riggins, C. Thormann, I. |
| author_sort | Khoury, Colin K. |
| collection | Repository of Agricultural Research Outputs (CGSpace) |
| description | Crop diversity underpins the productivity, resilience, and adaptive capacity of agriculture. Loss of this diversity, termed crop genetic erosion, is therefore concerning. While alarms regarding evident declines in crop diversity have been raised for over a century, the magnitude, trajectory, drivers, and significance of these losses remain insufficiently understood. We outline the various definitions, measurements, scales, and sources of information on crop genetic erosion. We then provide a synthesis of evidence regarding changes in the diversity of traditional crop landraces on farms, modern crop cultivars in agriculture, crop wild relatives in their natural habitats, and crop genetic resources held in conservation repositories. This evidence indicates that marked losses, but also maintenance and increases in diversity, have occurred in all these contexts, the extent depending on species, taxonomic and geographic scale, and region, as well as analytical approach. We discuss steps needed to further advance knowledge around the agricultural and societal significance, as well as conservation implications, of crop genetic erosion. Finally, we propose actions to mitigate, stem, and reverse further losses of crop diversity. |
| format | Journal Article |
| id | CGSpace115281 |
| institution | CGIAR Consortium |
| language | Inglés |
| publishDate | 2022 |
| publishDateRange | 2022 |
| publishDateSort | 2022 |
| publisher | Wiley |
| publisherStr | Wiley |
| record_format | dspace |
| spelling | CGSpace1152812025-03-11T12:14:31Z Crop genetic erosion: understanding and responding to loss of crop diversity Khoury, Colin K. Brush, S. Costich, Denise E. Curry, H.A. Haan, Stef de Engels, Johannes M.M. Guarino, Luigi Hoban, Sean Mercer, K.L. Miller, A.J. Nabhan, Gary Paul Perales, H.R. Richards, C. Riggins, C. Thormann, I. agrobiodiversity biodiversity conservation crops crop wild relatives food security plant genetic resources physiology Crop diversity underpins the productivity, resilience, and adaptive capacity of agriculture. Loss of this diversity, termed crop genetic erosion, is therefore concerning. While alarms regarding evident declines in crop diversity have been raised for over a century, the magnitude, trajectory, drivers, and significance of these losses remain insufficiently understood. We outline the various definitions, measurements, scales, and sources of information on crop genetic erosion. We then provide a synthesis of evidence regarding changes in the diversity of traditional crop landraces on farms, modern crop cultivars in agriculture, crop wild relatives in their natural habitats, and crop genetic resources held in conservation repositories. This evidence indicates that marked losses, but also maintenance and increases in diversity, have occurred in all these contexts, the extent depending on species, taxonomic and geographic scale, and region, as well as analytical approach. We discuss steps needed to further advance knowledge around the agricultural and societal significance, as well as conservation implications, of crop genetic erosion. Finally, we propose actions to mitigate, stem, and reverse further losses of crop diversity. 2022-01 2021-10-01T04:55:52Z 2021-10-01T04:55:52Z Journal Article https://hdl.handle.net/10568/115281 en Open Access Wiley Khoury, C. K., Brush, S., Costich, D. E., Curry, H. A., de Haan, S., Engels, J. M. M., Guarino, L., Hoban, S., Mercer, K. L., Miller, A. J., Nabhan, G. P., Perales, H. R., Richards, C., Riggins, C., & Thormann, I. (2021). Crop genetic erosion: understanding and responding to loss of crop diversity. New Phytologist. ISSN 1469-8137. |
| spellingShingle | agrobiodiversity biodiversity conservation crops crop wild relatives food security plant genetic resources physiology Khoury, Colin K. Brush, S. Costich, Denise E. Curry, H.A. Haan, Stef de Engels, Johannes M.M. Guarino, Luigi Hoban, Sean Mercer, K.L. Miller, A.J. Nabhan, Gary Paul Perales, H.R. Richards, C. Riggins, C. Thormann, I. Crop genetic erosion: understanding and responding to loss of crop diversity |
| title | Crop genetic erosion: understanding and responding to loss of crop diversity |
| title_full | Crop genetic erosion: understanding and responding to loss of crop diversity |
| title_fullStr | Crop genetic erosion: understanding and responding to loss of crop diversity |
| title_full_unstemmed | Crop genetic erosion: understanding and responding to loss of crop diversity |
| title_short | Crop genetic erosion: understanding and responding to loss of crop diversity |
| title_sort | crop genetic erosion understanding and responding to loss of crop diversity |
| topic | agrobiodiversity biodiversity conservation crops crop wild relatives food security plant genetic resources physiology |
| url | https://hdl.handle.net/10568/115281 |
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