The roles of light and pericarp on seed dormancy and germination in feral Raphanus sativus (Brassicaceae)
The timing of seed germination may determine the success of a weed species in an agroecosystem, and its expression is modulated by environmental conditions, but also by seed physiology and anatomy. The aims of this study were to investigate the roles of light, pericarp, dry storage and cold stratifi...
| Autores principales: | , , , , |
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| Formato: | Artículo |
| Lenguaje: | Inglés |
| Publicado: |
Wiley
2019
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| Materias: | |
| Acceso en línea: | https://onlinelibrary.wiley.com/doi/abs/10.1111/wre.12377 http://hdl.handle.net/20.500.12123/5788 https://doi.org/10.1111/wre.12377 |
| _version_ | 1855483687388315648 |
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| author | Vercellino, Roman Boris Pandolfo, Claudio Ezequiel Cerrotta, Alfonso Cantamutto, Miguel Angel Presotto, Alejandro Daniel |
| author_browse | Cantamutto, Miguel Angel Cerrotta, Alfonso Pandolfo, Claudio Ezequiel Presotto, Alejandro Daniel Vercellino, Roman Boris |
| author_facet | Vercellino, Roman Boris Pandolfo, Claudio Ezequiel Cerrotta, Alfonso Cantamutto, Miguel Angel Presotto, Alejandro Daniel |
| author_sort | Vercellino, Roman Boris |
| collection | INTA Digital |
| description | The timing of seed germination may determine the success of a weed species in an agroecosystem, and its expression is modulated by environmental conditions, but also by seed physiology and anatomy. The aims of this study were to investigate the roles of light, pericarp, dry storage and cold stratification on seed dormancy and germination in feral radish, a troublesome agricultural weed in temperate zones of the Americas that reduces crop yields. To this end, we used isolated intact pods and extracted seeds to test germination over time under contrasting temperature, light and storage conditions. Here, we showed that fresh seeds were non‐dormant, but that light and the presence of the pericarp reduced germination, especially under low temperatures. The pericarp reduced the final water content absorbed by seeds inside pods and decreased absorption/dehydration rates. The pericarp showed several small lignified cell layers in the endocarp, and x‐ray images displayed the lack of space between the partially embedded seed and the endocarp. Dry storage and cold stratification were ineffective in breaking the dormancy imposed by the pericarp. The apparent requirement for darkness and the mechanical restriction of the pericarp may have the potential to induce dormancy, spreading the timing of seed germination over a more extended period and hindering the control of feral radish. |
| format | Artículo |
| id | INTA5788 |
| institution | Instituto Nacional de Tecnología Agropecuaria (INTA -Argentina) |
| language | Inglés |
| publishDate | 2019 |
| publishDateRange | 2019 |
| publishDateSort | 2019 |
| publisher | Wiley |
| publisherStr | Wiley |
| record_format | dspace |
| spelling | INTA57882024-04-30T11:52:15Z The roles of light and pericarp on seed dormancy and germination in feral Raphanus sativus (Brassicaceae) Vercellino, Roman Boris Pandolfo, Claudio Ezequiel Cerrotta, Alfonso Cantamutto, Miguel Angel Presotto, Alejandro Daniel Raphanus Sativus Dormancia de Semillas Luz Pericarpio Germinación Seed Dormancy Light Pericarp Germination The timing of seed germination may determine the success of a weed species in an agroecosystem, and its expression is modulated by environmental conditions, but also by seed physiology and anatomy. The aims of this study were to investigate the roles of light, pericarp, dry storage and cold stratification on seed dormancy and germination in feral radish, a troublesome agricultural weed in temperate zones of the Americas that reduces crop yields. To this end, we used isolated intact pods and extracted seeds to test germination over time under contrasting temperature, light and storage conditions. Here, we showed that fresh seeds were non‐dormant, but that light and the presence of the pericarp reduced germination, especially under low temperatures. The pericarp reduced the final water content absorbed by seeds inside pods and decreased absorption/dehydration rates. The pericarp showed several small lignified cell layers in the endocarp, and x‐ray images displayed the lack of space between the partially embedded seed and the endocarp. Dry storage and cold stratification were ineffective in breaking the dormancy imposed by the pericarp. The apparent requirement for darkness and the mechanical restriction of the pericarp may have the potential to induce dormancy, spreading the timing of seed germination over a more extended period and hindering the control of feral radish. EEA Hilario Ascasubi Fil: Vercellino, Roman B. Universidad Nacional del Sur. Departamento de Agronomía; 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: Pandolfo, Claudio Ezequiel. Universidad Nacional del Sur. Departamento de Agronomía; 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: Cerrotta, Alfonso. Universidad Nacional del Sur. Departamento de Agronomía; 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 Fil: Presotto, Alejandro Daniel. Universidad Nacional del Sur. Departamento de Agronomía; Argentina; Consejo Nacional de Investigaciones Científicas y Técnicas. Centro Científico Tecnológico - CONICET - Bahía Blanca. Centro de Recursos Naturales Renovables de la Zona Semiárida; Argentina 2019-09-05T11:59:36Z 2019-09-05T11:59:36Z 2019-08-19 info:ar-repo/semantics/artículo info:eu-repo/semantics/article info:eu-repo/semantics/publishedVersion https://onlinelibrary.wiley.com/doi/abs/10.1111/wre.12377 http://hdl.handle.net/20.500.12123/5788 0043-1737 1365-3180 https://doi.org/10.1111/wre.12377 eng info:eu-repo/semantics/restrictedAccess application/pdf Wiley Weed Research First published: 19 August 2019 |
| spellingShingle | Raphanus Sativus Dormancia de Semillas Luz Pericarpio Germinación Seed Dormancy Light Pericarp Germination Vercellino, Roman Boris Pandolfo, Claudio Ezequiel Cerrotta, Alfonso Cantamutto, Miguel Angel Presotto, Alejandro Daniel The roles of light and pericarp on seed dormancy and germination in feral Raphanus sativus (Brassicaceae) |
| title | The roles of light and pericarp on seed dormancy and germination in feral Raphanus sativus (Brassicaceae) |
| title_full | The roles of light and pericarp on seed dormancy and germination in feral Raphanus sativus (Brassicaceae) |
| title_fullStr | The roles of light and pericarp on seed dormancy and germination in feral Raphanus sativus (Brassicaceae) |
| title_full_unstemmed | The roles of light and pericarp on seed dormancy and germination in feral Raphanus sativus (Brassicaceae) |
| title_short | The roles of light and pericarp on seed dormancy and germination in feral Raphanus sativus (Brassicaceae) |
| title_sort | roles of light and pericarp on seed dormancy and germination in feral raphanus sativus brassicaceae |
| topic | Raphanus Sativus Dormancia de Semillas Luz Pericarpio Germinación Seed Dormancy Light Pericarp Germination |
| url | https://onlinelibrary.wiley.com/doi/abs/10.1111/wre.12377 http://hdl.handle.net/20.500.12123/5788 https://doi.org/10.1111/wre.12377 |
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