Exoferality in sunflower (Helianthus annuus L.): a case study of intraspecific/interbiotype interference promoted by human activity
Helianthus annuus subsp. annuus, a biotype of the same species of the domesticated sunflower H. annuus var. macrocarpus, is an emergent noxious weed in several regions of the world. The frequent hybridization that occurs between the two taxa could explain its diffusion in agricultural fields. The in...
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| Format: | info:ar-repo/semantics/artículo |
| Language: | Inglés |
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2018
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| Subjects: | |
| Online Access: | http://hdl.handle.net/20.500.12123/2614 https://www.sciencedirect.com/science/article/pii/S0378429012004108 https://doi.org/10.1016/j.fcr.2012.11.022 |
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| author | Casquero, Mauricio Presotto, Alejandro Daniel Cantamutto, Miguel Angel |
| author_browse | Cantamutto, Miguel Angel Casquero, Mauricio Presotto, Alejandro Daniel |
| author_facet | Casquero, Mauricio Presotto, Alejandro Daniel Cantamutto, Miguel Angel |
| author_sort | Casquero, Mauricio |
| collection | INTA Digital |
| description | Helianthus annuus subsp. annuus, a biotype of the same species of the domesticated sunflower H. annuus var. macrocarpus, is an emergent noxious weed in several regions of the world. The frequent hybridization that occurs between the two taxa could explain its diffusion in agricultural fields. The invasive dynamics of a weedy biotype was studied in a recently invaded field during four successive seasons. The weedy biotype was grown in an experimental plot and was characterized phenotypically. Competition between weedy and cultivated sunflower was studied at both the experimental plot and crop field levels under a wide range of weed densities. The weedy biotype shows evidence of crop introgression, with high morphological variability and intermediate traits between the crop and wild or ruderal sunflower. After
four years under a sunflower–soybean summer crop rotation, the population was reproduced in the 75%
of the field. The sunflower crop yield was reduced by more than 50% with >4 weeds m−2. The weedy
sunflower achenes are similar in size to the crop and so can be harvested, adding over 300 kg ha−1 to
the harvested yield in crops with >4 weeds m−2. However this contribution was not enough to balance
the loss (1919 kg ha−1) in the crop yield. Weedy sunflower has lower oil content and different fatty acid composition than the crop and therefore it could affect the oil quantity and quality of the harvested grains, by physical contamination. It was shown that weedy sunflower invades and remains in agricultural fields, causing up to 74% loss in sunflower crop yield, which emphasizes the need to prevent weedy sunflower colonization and invasion in sunflower fields. In order to prevent the introduction of weedy biotypes into non-invaded areas seed purity and thorough cleaning of agricultural machinery are of utmost importance.
This is the first study of weedy sunflower density effect on sunflower yield loss. |
| format | info:ar-repo/semantics/artículo |
| id | INTA2614 |
| institution | Instituto Nacional de Tecnología Agropecuaria (INTA -Argentina) |
| language | Inglés |
| publishDate | 2018 |
| publishDateRange | 2018 |
| publishDateSort | 2018 |
| record_format | dspace |
| spelling | INTA26142024-04-30T11:50:17Z Exoferality in sunflower (Helianthus annuus L.): a case study of intraspecific/interbiotype interference promoted by human activity Casquero, Mauricio Presotto, Alejandro Daniel Cantamutto, Miguel Angel Helianthus Annuus Rendimiento de Cultivos Competencia Intraespecífica Malezas Biotipos Biotypes Weeds Intraspecific Competition Crop Yield Girasol Ferality Sunflower Helianthus annuus subsp. annuus, a biotype of the same species of the domesticated sunflower H. annuus var. macrocarpus, is an emergent noxious weed in several regions of the world. The frequent hybridization that occurs between the two taxa could explain its diffusion in agricultural fields. The invasive dynamics of a weedy biotype was studied in a recently invaded field during four successive seasons. The weedy biotype was grown in an experimental plot and was characterized phenotypically. Competition between weedy and cultivated sunflower was studied at both the experimental plot and crop field levels under a wide range of weed densities. The weedy biotype shows evidence of crop introgression, with high morphological variability and intermediate traits between the crop and wild or ruderal sunflower. After four years under a sunflower–soybean summer crop rotation, the population was reproduced in the 75% of the field. The sunflower crop yield was reduced by more than 50% with >4 weeds m−2. The weedy sunflower achenes are similar in size to the crop and so can be harvested, adding over 300 kg ha−1 to the harvested yield in crops with >4 weeds m−2. However this contribution was not enough to balance the loss (1919 kg ha−1) in the crop yield. Weedy sunflower has lower oil content and different fatty acid composition than the crop and therefore it could affect the oil quantity and quality of the harvested grains, by physical contamination. It was shown that weedy sunflower invades and remains in agricultural fields, causing up to 74% loss in sunflower crop yield, which emphasizes the need to prevent weedy sunflower colonization and invasion in sunflower fields. In order to prevent the introduction of weedy biotypes into non-invaded areas seed purity and thorough cleaning of agricultural machinery are of utmost importance. This is the first study of weedy sunflower density effect on sunflower yield loss. Fil: Casquero, Mauricio. Universidad Nacional del Sur. Departamento de Agronomía; Argentina Fil: Presotto, Alejandro Daniel. Universidad Nacional del Sur. Departamento de Agronomía. Laboratorio de Genética y Mejoramiento; Argentina; Consejo Nacional de Investigaciones Científicas y Técnicas. Centro Científico Tecnológico - CONICET - Bahía Blanca. Centro de Recursos Naturales Renovables de la Zona Semiárida; Argentina Fil: Cantamutto, Miguel Angel. Instituto Nacional de Tecnología Agropecuaria (INTA). Estación Experimental Agropecuaria Hilario Ascasubi; Argentina. Universidad Nacional del Sur. Departamento de Agronomía; Argentina; Consejo Nacional de Investigaciones Científicas y Técnicas; Argentina 2018-06-13T14:51:48Z 2018-06-13T14:51:48Z 2013 info:ar-repo/semantics/artículo info:eu-repo/semantics/article info:eu-repo/semantics/publishedVersion http://hdl.handle.net/20.500.12123/2614 https://www.sciencedirect.com/science/article/pii/S0378429012004108 0378-4290 https://doi.org/10.1016/j.fcr.2012.11.022 eng info:eu-repo/semantics/restrictedAccess application/pdf Field crops research 142 : 95–101. (2013) |
| spellingShingle | Helianthus Annuus Rendimiento de Cultivos Competencia Intraespecífica Malezas Biotipos Biotypes Weeds Intraspecific Competition Crop Yield Girasol Ferality Sunflower Casquero, Mauricio Presotto, Alejandro Daniel Cantamutto, Miguel Angel Exoferality in sunflower (Helianthus annuus L.): a case study of intraspecific/interbiotype interference promoted by human activity |
| title | Exoferality in sunflower (Helianthus annuus L.): a case study of intraspecific/interbiotype interference promoted by human activity |
| title_full | Exoferality in sunflower (Helianthus annuus L.): a case study of intraspecific/interbiotype interference promoted by human activity |
| title_fullStr | Exoferality in sunflower (Helianthus annuus L.): a case study of intraspecific/interbiotype interference promoted by human activity |
| title_full_unstemmed | Exoferality in sunflower (Helianthus annuus L.): a case study of intraspecific/interbiotype interference promoted by human activity |
| title_short | Exoferality in sunflower (Helianthus annuus L.): a case study of intraspecific/interbiotype interference promoted by human activity |
| title_sort | exoferality in sunflower helianthus annuus l a case study of intraspecific interbiotype interference promoted by human activity |
| topic | Helianthus Annuus Rendimiento de Cultivos Competencia Intraespecífica Malezas Biotipos Biotypes Weeds Intraspecific Competition Crop Yield Girasol Ferality Sunflower |
| url | http://hdl.handle.net/20.500.12123/2614 https://www.sciencedirect.com/science/article/pii/S0378429012004108 https://doi.org/10.1016/j.fcr.2012.11.022 |
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