Patterns of domestication in the Ethiopian oil-seed crop noug (Guizotia abyssinica)
Noug (Guizotia abyssinica) is a semidomesticated oil-seed crop, which is primarily cultivated in Ethiopia. Unlike its closest crop relative, sunflower, noug has small seeds, small flowering heads, many branches, many flowering heads, and indeterminate flowering, and it shatters in the field. Here, w...
| Autores principales: | , , , , , , , , , , |
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| Formato: | Journal Article |
| Lenguaje: | Inglés |
| Publicado: |
Wiley
2015
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| Materias: | |
| Acceso en línea: | https://hdl.handle.net/10568/65246 |
| _version_ | 1855536170324197376 |
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| author | Dempewolf, Hannes Tesfaye, M. Teshome, A. Bjorkman, Anne D. Andrew, R.L. Scascitelli, M. Black, S. Bekele, E. Engels, Johannes M.M. Cronk, Q.C.B. Rieseberg, Loren H. |
| author_browse | Andrew, R.L. Bekele, E. Bjorkman, Anne D. Black, S. Cronk, Q.C.B. Dempewolf, Hannes Engels, Johannes M.M. Rieseberg, Loren H. Scascitelli, M. Tesfaye, M. Teshome, A. |
| author_facet | Dempewolf, Hannes Tesfaye, M. Teshome, A. Bjorkman, Anne D. Andrew, R.L. Scascitelli, M. Black, S. Bekele, E. Engels, Johannes M.M. Cronk, Q.C.B. Rieseberg, Loren H. |
| author_sort | Dempewolf, Hannes |
| collection | Repository of Agricultural Research Outputs (CGSpace) |
| description | Noug (Guizotia abyssinica) is a semidomesticated oil-seed crop, which is primarily cultivated in Ethiopia. Unlike its closest crop relative, sunflower, noug has small seeds, small flowering heads, many branches, many flowering heads, and indeterminate flowering, and it shatters in the field. Here, we conducted common garden studies and microsatellite analyses of genetic variation to test whether high levels of crop–wild gene flow and/or unfavorable phenotypic correlations have hindered noug domestication. With the exception of one population, analyses of microsatellite variation failed to detect substantial recent admixture between noug and its wild progenitor. Likewise, only very weak correlations were found between seed mass and the number or size of flowering heads. Thus, noug's ‘atypical’ domestication syndrome does not seem to be a consequence of recent introgression or unfavorable phenotypic correlations. Nonetheless, our data do reveal evidence of local adaptation of noug cultivars to different precipitation regimes, as well as high levels of phenotypic plasticity, which may permit reasonable yields under diverse environmental conditions. Why noug has not been fully domesticated remains a mystery, but perhaps early farmers selected for resilience to episodic drought or untended environments rather than larger seeds. Domestication may also have been slowed by noug's outcrossing mating system |
| format | Journal Article |
| id | CGSpace65246 |
| institution | CGIAR Consortium |
| language | Inglés |
| publishDate | 2015 |
| publishDateRange | 2015 |
| publishDateSort | 2015 |
| publisher | Wiley |
| publisherStr | Wiley |
| record_format | dspace |
| spelling | CGSpace652462025-11-12T05:46:51Z Patterns of domestication in the Ethiopian oil-seed crop noug (Guizotia abyssinica) Dempewolf, Hannes Tesfaye, M. Teshome, A. Bjorkman, Anne D. Andrew, R.L. Scascitelli, M. Black, S. Bekele, E. Engels, Johannes M.M. Cronk, Q.C.B. Rieseberg, Loren H. oil crops genetic variation domestication genetic resources crop improvement gene flow adaptation Noug (Guizotia abyssinica) is a semidomesticated oil-seed crop, which is primarily cultivated in Ethiopia. Unlike its closest crop relative, sunflower, noug has small seeds, small flowering heads, many branches, many flowering heads, and indeterminate flowering, and it shatters in the field. Here, we conducted common garden studies and microsatellite analyses of genetic variation to test whether high levels of crop–wild gene flow and/or unfavorable phenotypic correlations have hindered noug domestication. With the exception of one population, analyses of microsatellite variation failed to detect substantial recent admixture between noug and its wild progenitor. Likewise, only very weak correlations were found between seed mass and the number or size of flowering heads. Thus, noug's ‘atypical’ domestication syndrome does not seem to be a consequence of recent introgression or unfavorable phenotypic correlations. Nonetheless, our data do reveal evidence of local adaptation of noug cultivars to different precipitation regimes, as well as high levels of phenotypic plasticity, which may permit reasonable yields under diverse environmental conditions. Why noug has not been fully domesticated remains a mystery, but perhaps early farmers selected for resilience to episodic drought or untended environments rather than larger seeds. Domestication may also have been slowed by noug's outcrossing mating system 2015-06 2015-04-29T14:05:03Z 2015-04-29T14:05:03Z Journal Article https://hdl.handle.net/10568/65246 en Open Access application/pdf Wiley Dempewolf, H.; Tesfaye, M.; Teshome, A.; Bjorkman, A.D.; Andrew, R.L.; Scascitelli, M.; Black, S.; Bekele, E.; Engels, J.M.M.; Cronk, Q.C.B.; Rieseberg, L.H. (2015) Patterns of domestication in the Ethiopian oil-seed crop noug (Guizotia abyssinica). Evolutionary Applications 8(5) p. 464-475 ISSN: 1752-4571 |
| spellingShingle | oil crops genetic variation domestication genetic resources crop improvement gene flow adaptation Dempewolf, Hannes Tesfaye, M. Teshome, A. Bjorkman, Anne D. Andrew, R.L. Scascitelli, M. Black, S. Bekele, E. Engels, Johannes M.M. Cronk, Q.C.B. Rieseberg, Loren H. Patterns of domestication in the Ethiopian oil-seed crop noug (Guizotia abyssinica) |
| title | Patterns of domestication in the Ethiopian oil-seed crop noug (Guizotia abyssinica) |
| title_full | Patterns of domestication in the Ethiopian oil-seed crop noug (Guizotia abyssinica) |
| title_fullStr | Patterns of domestication in the Ethiopian oil-seed crop noug (Guizotia abyssinica) |
| title_full_unstemmed | Patterns of domestication in the Ethiopian oil-seed crop noug (Guizotia abyssinica) |
| title_short | Patterns of domestication in the Ethiopian oil-seed crop noug (Guizotia abyssinica) |
| title_sort | patterns of domestication in the ethiopian oil seed crop noug guizotia abyssinica |
| topic | oil crops genetic variation domestication genetic resources crop improvement gene flow adaptation |
| url | https://hdl.handle.net/10568/65246 |
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