Soybean breeding effects on seed yield determination under contrasting water supply
Soybean seed yield (SY) gains have been achieved through both genetic improvement and advances in agronomic practices. However, the contribution of genetic gain (GG) to overall yield improvement can vary depending on specific environmental conditions, particularly under contrasting water supply. In...
| Autores principales: | , , , |
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| Formato: | Artículo |
| Lenguaje: | Inglés |
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Scilight
2025
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| Acceso en línea: | http://hdl.handle.net/20.500.12123/24611 https://www.sciltp.com/journals/pmsc/articles/2507000975 https://doi.org/10.53941/pmsc.2025.100003 |
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| author | Avalos Britez, Selva Rocío Di Mauro, Guido Abdala, Lucas J. Otegui, María Elena |
| author_browse | Abdala, Lucas J. Avalos Britez, Selva Rocío Di Mauro, Guido Otegui, María Elena |
| author_facet | Avalos Britez, Selva Rocío Di Mauro, Guido Abdala, Lucas J. Otegui, María Elena |
| author_sort | Avalos Britez, Selva Rocío |
| collection | INTA Digital |
| description | Soybean seed yield (SY) gains have been achieved through both genetic improvement and advances in agronomic practices. However, the contribution of genetic gain (GG) to overall yield improvement can vary depending on specific environmental conditions, particularly under contrasting water supply. In this study, we analyze the impact of traditional soybean breeding on SY, its physiological determinants, and numeric yield components across contrasting water supply conditions. Field trials included a representative set of widely adopted commercial varieties from maturity groups (MGs) IV–V released between 1982 and 2016, grown in the core production zone of the humid Pampas region in Argentina. Results showed a biphasic GG trend for SY, which declined at a rate of 0.64% year⁻1 until 2004 and increased at 1.9% year⁻1 from 2004 onwards. These trends were mirrored by changes in harvest index (HI) and, to a lesser extent, by aboveground biomass (BT), particularly under water-limited conditions. Changes in BT were reflected in similar trends in radiation and water use efficiencies, as no significant breeding effects were observed on resource capture. The most consistent effects of breeding were observed on seed number and pod number, with no clear trends in individual seed weight. The absence of differences in crop evapotranspiration among genotypes suggests that recent genetic progress improved the efficiency of biomass production rather than increasing water use. This study highlights the importance of analyzing GG within specific MGs and environments, revealing previously undetected shifts in SY trends within MG IV–V adapted to humid temperate regions. |
| format | Artículo |
| id | INTA24611 |
| institution | Instituto Nacional de Tecnología Agropecuaria (INTA -Argentina) |
| language | Inglés |
| publishDate | 2025 |
| publishDateRange | 2025 |
| publishDateSort | 2025 |
| publisher | Scilight |
| publisherStr | Scilight |
| record_format | dspace |
| spelling | INTA246112025-12-17T12:54:05Z Soybean breeding effects on seed yield determination under contrasting water supply Avalos Britez, Selva Rocío Di Mauro, Guido Abdala, Lucas J. Otegui, María Elena Soja Glycine max Mejoramiento Genético Rendimiento Eficiencia en el Uso de los Recursos Soybeans Genetic Improvement Yields Resource Use Efficiency Genetic Gain Mejora Genética Seed Yield Secondary Traits Soybean seed yield (SY) gains have been achieved through both genetic improvement and advances in agronomic practices. However, the contribution of genetic gain (GG) to overall yield improvement can vary depending on specific environmental conditions, particularly under contrasting water supply. In this study, we analyze the impact of traditional soybean breeding on SY, its physiological determinants, and numeric yield components across contrasting water supply conditions. Field trials included a representative set of widely adopted commercial varieties from maturity groups (MGs) IV–V released between 1982 and 2016, grown in the core production zone of the humid Pampas region in Argentina. Results showed a biphasic GG trend for SY, which declined at a rate of 0.64% year⁻1 until 2004 and increased at 1.9% year⁻1 from 2004 onwards. These trends were mirrored by changes in harvest index (HI) and, to a lesser extent, by aboveground biomass (BT), particularly under water-limited conditions. Changes in BT were reflected in similar trends in radiation and water use efficiencies, as no significant breeding effects were observed on resource capture. The most consistent effects of breeding were observed on seed number and pod number, with no clear trends in individual seed weight. The absence of differences in crop evapotranspiration among genotypes suggests that recent genetic progress improved the efficiency of biomass production rather than increasing water use. This study highlights the importance of analyzing GG within specific MGs and environments, revealing previously undetected shifts in SY trends within MG IV–V adapted to humid temperate regions. EEA Pergamino Fil: Avalos Brítez, Selva Rocío. Instituto Nacional de Tecnología Agropecuaria (INTA). Estación Experimental Agropecuaria Pergamino. Ecofisiología; Argentina Fil: Di Mauro, Guido. Universidad Nacional de Rosario. Facultad de Ciencias Agrarias. Cátedra de Sistemas de Cultivos Extensivos; Argentina Fil: Di Mauro, Guido. Consejo Nacional de Investigaciones Científicas y Técnicas. Grupo de Investigación en Manejo y Utilización de Cultivos Extensivos; Argentina Fil: Abdala, Lucas J. Grupo Don Mario. Departamento de Desarrollo; Estados Unidos Fil: Otegui, María Elena. Instituto Nacional de Tecnología Agropecuaria (INTA). Estación Experimental Agropecuaria Pergamino. Departamento de Producción Vegetal. Manejo de cultivos; Argentina Fil: Otegui, María E. Universidad de Buenos Aires. Facultad de Agronomía. Departamento de Producción Vegetal; Argentina Fil: Otegui, María E. Consejo Nacional de Investigaciones Científicas y Técnicas; Argentina 2025-12-17T12:46:42Z 2025-12-17T12:46:42Z 2025-07 info:ar-repo/semantics/artículo info:eu-repo/semantics/article info:eu-repo/semantics/publishedVersion http://hdl.handle.net/20.500.12123/24611 https://www.sciltp.com/journals/pmsc/articles/2507000975 3083-4333 (online) https://doi.org/10.53941/pmsc.2025.100003 eng info:eu-repo/semantics/openAccess 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 Scilight Physiology and Management of Sustainable Crops 1 (1) : 3. (2025) |
| spellingShingle | Soja Glycine max Mejoramiento Genético Rendimiento Eficiencia en el Uso de los Recursos Soybeans Genetic Improvement Yields Resource Use Efficiency Genetic Gain Mejora Genética Seed Yield Secondary Traits Avalos Britez, Selva Rocío Di Mauro, Guido Abdala, Lucas J. Otegui, María Elena Soybean breeding effects on seed yield determination under contrasting water supply |
| title | Soybean breeding effects on seed yield determination under contrasting water supply |
| title_full | Soybean breeding effects on seed yield determination under contrasting water supply |
| title_fullStr | Soybean breeding effects on seed yield determination under contrasting water supply |
| title_full_unstemmed | Soybean breeding effects on seed yield determination under contrasting water supply |
| title_short | Soybean breeding effects on seed yield determination under contrasting water supply |
| title_sort | soybean breeding effects on seed yield determination under contrasting water supply |
| topic | Soja Glycine max Mejoramiento Genético Rendimiento Eficiencia en el Uso de los Recursos Soybeans Genetic Improvement Yields Resource Use Efficiency Genetic Gain Mejora Genética Seed Yield Secondary Traits |
| url | http://hdl.handle.net/20.500.12123/24611 https://www.sciltp.com/journals/pmsc/articles/2507000975 https://doi.org/10.53941/pmsc.2025.100003 |
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