Photoperiod and vernalization requirements in Argentinian oat genotypes
Understanding the response to temperature, vernalization, and photoperiod provides a significant advantage for optimizing the adaptability of oat (Avena sativa) genotypes to different production areas and sowing seasons in a climate change context. For this, two experiments were carried out in the A...
| Autores principales: | , , , , |
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| Formato: | Artículo |
| Lenguaje: | Inglés |
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Wiley
2025
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| Acceso en línea: | http://hdl.handle.net/20.500.12123/22434 https://acsess.onlinelibrary.wiley.com/doi/10.1002/agj2.70078 https://doi.org/10.1002/agj2.70078 |
| _version_ | 1855486935130177536 |
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| author | Dietz, Juan Ignacio Da Silva, Laura Victoria Schierenbeck, Matías Pardi, Martín Simón, María Rosa |
| author_browse | Da Silva, Laura Victoria Dietz, Juan Ignacio Pardi, Martín Schierenbeck, Matías Simón, María Rosa |
| author_facet | Dietz, Juan Ignacio Da Silva, Laura Victoria Schierenbeck, Matías Pardi, Martín Simón, María Rosa |
| author_sort | Dietz, Juan Ignacio |
| collection | INTA Digital |
| description | Understanding the response to temperature, vernalization, and photoperiod provides a significant advantage for optimizing the adaptability of oat (Avena sativa) genotypes to different production areas and sowing seasons in a climate change context. For this, two experiments were carried out in the Argentinian Pampas, where nine oat genotypes were sown on six sowing dates (from June to December, <10 h to >15 h photoperiod) and three vernalization treatments (40, 20, and 0 days at 4°C). Days from emergence to flowering were evaluated and then converted to growing degree days. The adjustment of duration from emergence to flowering using an average photoperiod was performed using bilinear regressions to determine the photoperiod sensitivity (Ps), threshold (Pt), and earliness per se. Our findings showed that genotypes were insensitive to vernalization, others with minimal requirements (<480 cold hours at 4°C) while materials with high requirements were not found, indicating a reasonably constrained range of variability. Different photoperiod responses were found between the genotypes explained by differences in Ps (slopes from −310°C days h−1 to −158°C days h−1) and Pt. Overall, vernalization was not strictly necessary for flowering across all genotypes or sowing dates, but its fulfillment significantly accelerated developmental transitions under long-day conditions. |
| format | Artículo |
| id | INTA22434 |
| institution | Instituto Nacional de Tecnología Agropecuaria (INTA -Argentina) |
| language | Inglés |
| publishDate | 2025 |
| publishDateRange | 2025 |
| publishDateSort | 2025 |
| publisher | Wiley |
| publisherStr | Wiley |
| record_format | dspace |
| spelling | INTA224342025-05-26T11:08:10Z Photoperiod and vernalization requirements in Argentinian oat genotypes Dietz, Juan Ignacio Da Silva, Laura Victoria Schierenbeck, Matías Pardi, Martín Simón, María Rosa Avena Genotipos Fotoperiódo Vernalización Argentina Oats Genotypes Photoperiod Vernalization Understanding the response to temperature, vernalization, and photoperiod provides a significant advantage for optimizing the adaptability of oat (Avena sativa) genotypes to different production areas and sowing seasons in a climate change context. For this, two experiments were carried out in the Argentinian Pampas, where nine oat genotypes were sown on six sowing dates (from June to December, <10 h to >15 h photoperiod) and three vernalization treatments (40, 20, and 0 days at 4°C). Days from emergence to flowering were evaluated and then converted to growing degree days. The adjustment of duration from emergence to flowering using an average photoperiod was performed using bilinear regressions to determine the photoperiod sensitivity (Ps), threshold (Pt), and earliness per se. Our findings showed that genotypes were insensitive to vernalization, others with minimal requirements (<480 cold hours at 4°C) while materials with high requirements were not found, indicating a reasonably constrained range of variability. Different photoperiod responses were found between the genotypes explained by differences in Ps (slopes from −310°C days h−1 to −158°C days h−1) and Pt. Overall, vernalization was not strictly necessary for flowering across all genotypes or sowing dates, but its fulfillment significantly accelerated developmental transitions under long-day conditions. EEA Bordenave Fil: Dietz, Juan Ignacio. Universidad Nacional de La Plata. Facultad de Ciencias Agrarias y Forestales. Cátedra de Cerealicultura; Argentina. Fil: Dietz, Juan Ignacio. Instituto Nacional de Tecnología Agropecuaria (INTA). Estación Experimental Agropecuaria Bordenave; Argentina. Fil: Dietz, Juan Ignacio. Consejo Nacional de Investigaciones Científicas y Técnicas; Argentina Fil: Da Silva, Laura Victoria. Instituto Nacional de Tecnología Agropecuaria (INTA). Estación Experimental Agropecuaria Bordenave; Argentina Fil: Da Silva, Laura Victoria. Consejo Nacional de Investigaciones Científicas y Técnicas; Argentina Fil: Schierenbeck, Matías. Universidad Nacional de La Plata. Facultad de Ciencias Agrarias y Forestales. Cátedra de Cerealicultura; Argentina Fil: Schierenbeck, Matías. Consejo Nacional de Investigaciones Científicas y Técnicas; Argentina Fil: Schierenbeck, Matías. Leibniz Institute of Plant Genetics and Crop Plant Research. Physiology and Cell Biology Department; Alemania Fil: Pardi, Martín. Universidad Nacional de La Plata. Facultad de Ciencias Agrarias y Forestales. Cátedra de Cerealicultura; Argentina. Fil: Simon, Maria Rosa. Universidad Nacional de La Plata. Facultad de Ciencias Agrarias y Forestales. Cátedra de Cerealicultura; Argentina. Fil: Simon, Maria Rosa. Consejo Nacional de Investigaciones Científicas y Técnicas; Argentina 2025-05-26T11:03:45Z 2025-05-26T11:03:45Z 2025-05 info:ar-repo/semantics/artículo info:eu-repo/semantics/article info:eu-repo/semantics/publishedVersion http://hdl.handle.net/20.500.12123/22434 https://acsess.onlinelibrary.wiley.com/doi/10.1002/agj2.70078 0002-1962 1435-0645 https://doi.org/10.1002/agj2.70078 eng info:eu-repo/semantics/restrictedAccess http://creativecommons.org/licenses/by-nc-sa/4.0/ Creative Commons Attribution-NonCommercial-ShareAlike 4.0 International (CC BY-NC-SA 4.0) application/pdf Wiley Agronomy Journal 117 (3) : e70078. (May/June 2025) |
| spellingShingle | Avena Genotipos Fotoperiódo Vernalización Argentina Oats Genotypes Photoperiod Vernalization Dietz, Juan Ignacio Da Silva, Laura Victoria Schierenbeck, Matías Pardi, Martín Simón, María Rosa Photoperiod and vernalization requirements in Argentinian oat genotypes |
| title | Photoperiod and vernalization requirements in Argentinian oat genotypes |
| title_full | Photoperiod and vernalization requirements in Argentinian oat genotypes |
| title_fullStr | Photoperiod and vernalization requirements in Argentinian oat genotypes |
| title_full_unstemmed | Photoperiod and vernalization requirements in Argentinian oat genotypes |
| title_short | Photoperiod and vernalization requirements in Argentinian oat genotypes |
| title_sort | photoperiod and vernalization requirements in argentinian oat genotypes |
| topic | Avena Genotipos Fotoperiódo Vernalización Argentina Oats Genotypes Photoperiod Vernalization |
| url | http://hdl.handle.net/20.500.12123/22434 https://acsess.onlinelibrary.wiley.com/doi/10.1002/agj2.70078 https://doi.org/10.1002/agj2.70078 |
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