How does post-flowering sources/sink manipulation affect grain weight and commercial quality in Argentinean bread wheat genotypes with different baking aptitude?
Context: Wheat is a crop of vital importance for food security. In contrast to the accumulated knowledge for yield determination, the effect of variations in the source/sink (S/S) ratio on grain quality, and its interaction with the genotype and fertilization level, have received little attention....
| Autores principales: | , , , , , |
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| Formato: | info:ar-repo/semantics/artículo |
| Lenguaje: | Inglés |
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Elsevier
2023
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| Materias: | |
| Acceso en línea: | http://hdl.handle.net/20.500.12123/15255 https://www.sciencedirect.com/science/article/pii/S037842902300223X https://doi.org/10.1016/j.fcr.2023.109030 |
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| author | Arata, Agustín Francisco Lázaro, Laura Tranquilli, Gabriela Arrigoni, Adriana C. Martínez, Mauro Rondanini, Deborah Paola |
| author_browse | Arata, Agustín Francisco Arrigoni, Adriana C. Lázaro, Laura Martínez, Mauro Rondanini, Deborah Paola Tranquilli, Gabriela |
| author_facet | Arata, Agustín Francisco Lázaro, Laura Tranquilli, Gabriela Arrigoni, Adriana C. Martínez, Mauro Rondanini, Deborah Paola |
| author_sort | Arata, Agustín Francisco |
| collection | INTA Digital |
| description | Context: Wheat is a crop of vital importance for food security. In contrast to the accumulated knowledge for yield determination, the effect of variations in the source/sink (S/S) ratio on grain quality, and its interaction with the genotype and fertilization level, have received little attention.
Objective: This work aimed to analyze the incidence of S/S ratio changes during post-flowering on grain weight and commercial quality in bread wheat genotypes with contrasting baking aptitude, as well as to evaluate its interaction with early nitrogen-sulfur fertilization. It is hypothesized that modern wheat genotypes bred for high yield and contrasting baking aptitudes differ in their responses to variations in the availability of assimilates during post-flowering.
Methods: Rainfed field trials were carried out in the Humid Pampas of Argentina during two years. Six wheat genotypes belonging to different quality groups were used, to which manipulative S/S treatments in post flowering (shading, defoliation, thinning, trimming) and different levels of nitrogen-sulfur fertilization were applied. Regressions between S/S ratio (growth per grain) and grain variables (grain weight, protein content per grain, protein concentration, and test weight) were analyzed.
Results: Grain weight responses ranged from − 42% to + 31% relative to control compared to variations in S/S ratio from − 81% to + 56%, varying with the year and genotype. Relative changes of grain weight and S/S ratio were linearly associated, showing differences in stability (slope range: 0.29–0.80) among genotypes (the lower the slope, the greater the stability). Protein content per grain increased linearly with increases in the S/S rela tionship only for fertilized crops with N and S. As expected, protein concentration decreased when the S/S ratio increased, while test weight was the opposite. Importantly, responses varied among genotypes and fertilization levels, regardless of baking quality group.
Conclusions: Grain weight to S/S ratio after flowering relationships differed between bread wheat genotypes, even within the same quality group, while protein content stability did not differ significantly. Therefore, for the conditions of this study in high-yielding environments in the Humid Pampas, the different protein concentration responses were due to genotypic differences in grain weight stability against variations in assimilates availability during grain filling. Nitrogen-sulfur fertilization early at the crop cycle did not modify the grain weight responses to variations in the S/S ratio, although it increased their influence on the commercial quality parameters. |
| format | info:ar-repo/semantics/artículo |
| id | INTA15255 |
| institution | Instituto Nacional de Tecnología Agropecuaria (INTA -Argentina) |
| language | Inglés |
| publishDate | 2023 |
| publishDateRange | 2023 |
| publishDateSort | 2023 |
| publisher | Elsevier |
| publisherStr | Elsevier |
| record_format | dspace |
| spelling | INTA152552023-09-20T10:22:41Z How does post-flowering sources/sink manipulation affect grain weight and commercial quality in Argentinean bread wheat genotypes with different baking aptitude? Arata, Agustín Francisco Lázaro, Laura Tranquilli, Gabriela Arrigoni, Adriana C. Martínez, Mauro Rondanini, Deborah Paola Wheat Genotypes Sulfur Fertilizers Nitrogen Fertilizers Trigo Genotipos Abonos Sulfurados Abonos Nitrogenados Source/sink Grain Weight Grain Protein Fuente/sumidero Peso del Grano Proteína de Grano Context: Wheat is a crop of vital importance for food security. In contrast to the accumulated knowledge for yield determination, the effect of variations in the source/sink (S/S) ratio on grain quality, and its interaction with the genotype and fertilization level, have received little attention. Objective: This work aimed to analyze the incidence of S/S ratio changes during post-flowering on grain weight and commercial quality in bread wheat genotypes with contrasting baking aptitude, as well as to evaluate its interaction with early nitrogen-sulfur fertilization. It is hypothesized that modern wheat genotypes bred for high yield and contrasting baking aptitudes differ in their responses to variations in the availability of assimilates during post-flowering. Methods: Rainfed field trials were carried out in the Humid Pampas of Argentina during two years. Six wheat genotypes belonging to different quality groups were used, to which manipulative S/S treatments in post flowering (shading, defoliation, thinning, trimming) and different levels of nitrogen-sulfur fertilization were applied. Regressions between S/S ratio (growth per grain) and grain variables (grain weight, protein content per grain, protein concentration, and test weight) were analyzed. Results: Grain weight responses ranged from − 42% to + 31% relative to control compared to variations in S/S ratio from − 81% to + 56%, varying with the year and genotype. Relative changes of grain weight and S/S ratio were linearly associated, showing differences in stability (slope range: 0.29–0.80) among genotypes (the lower the slope, the greater the stability). Protein content per grain increased linearly with increases in the S/S rela tionship only for fertilized crops with N and S. As expected, protein concentration decreased when the S/S ratio increased, while test weight was the opposite. Importantly, responses varied among genotypes and fertilization levels, regardless of baking quality group. Conclusions: Grain weight to S/S ratio after flowering relationships differed between bread wheat genotypes, even within the same quality group, while protein content stability did not differ significantly. Therefore, for the conditions of this study in high-yielding environments in the Humid Pampas, the different protein concentration responses were due to genotypic differences in grain weight stability against variations in assimilates availability during grain filling. Nitrogen-sulfur fertilization early at the crop cycle did not modify the grain weight responses to variations in the S/S ratio, although it increased their influence on the commercial quality parameters. Fil: Arata, Agustín. Universidad Nacional del Centro de la Provincia de Buenos Aires. Facultad de Agronomía. Centro de Investigaciones Integradas sobre Sistemas Agronómicos Sustentables (CIISAS), Sede Azul; Argentina Fil: Lázaro, Laura. Universidad Nacional del Centro de la Provincia de Buenos Aires. Facultad de Agronomía. Centro de Investigaciones Integradas sobre Sistemas Agronómicos Sustentables (CIISAS), Sede Azul; Argentina Fil: Tranquilli, Gabriela. Instituto Nacional de Tecnología Agropecuaria (INTA). Instituto de Recursos Biológicos; Argentina Fil: Arrigoni, A.C. Universidad Nacional del Centro de la Provincia de Buenos Aires. Facultad de Agronomía. Departamento de Producción Vegetal, Cereales y Oleaginosas, Laboratorio de Valoración de Calidad Industrial de Trigo; Argentina Fil: Martínez, Mauro. Universidad Nacional del Centro de la Provincia de Buenos Aires. Facultad de Agronomía. Centro de Investigaciones Integradas sobre Sistemas Agronómicos Sustentables (CIISAS), Sede Azul; Argentina Fil: Rondanini, Débora P. Universidad de Buenos Aires. Facultad de Agronomía; Argentina. Consejo Nacional de Investigaciones Científicas y Técnicas; Argentina 2023-09-20T10:12:08Z 2023-09-20T10:12:08Z 2023-06-29 info:ar-repo/semantics/artículo info:eu-repo/semantics/article info:eu-repo/semantics/publishedVersion http://hdl.handle.net/20.500.12123/15255 https://www.sciencedirect.com/science/article/pii/S037842902300223X 0378-4290 https://doi.org/10.1016/j.fcr.2023.109030 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 Elsevier Field Crops Research 301 : 109030. (October 2023) |
| spellingShingle | Wheat Genotypes Sulfur Fertilizers Nitrogen Fertilizers Trigo Genotipos Abonos Sulfurados Abonos Nitrogenados Source/sink Grain Weight Grain Protein Fuente/sumidero Peso del Grano Proteína de Grano Arata, Agustín Francisco Lázaro, Laura Tranquilli, Gabriela Arrigoni, Adriana C. Martínez, Mauro Rondanini, Deborah Paola How does post-flowering sources/sink manipulation affect grain weight and commercial quality in Argentinean bread wheat genotypes with different baking aptitude? |
| title | How does post-flowering sources/sink manipulation affect grain weight and commercial quality in Argentinean bread wheat genotypes with different baking aptitude? |
| title_full | How does post-flowering sources/sink manipulation affect grain weight and commercial quality in Argentinean bread wheat genotypes with different baking aptitude? |
| title_fullStr | How does post-flowering sources/sink manipulation affect grain weight and commercial quality in Argentinean bread wheat genotypes with different baking aptitude? |
| title_full_unstemmed | How does post-flowering sources/sink manipulation affect grain weight and commercial quality in Argentinean bread wheat genotypes with different baking aptitude? |
| title_short | How does post-flowering sources/sink manipulation affect grain weight and commercial quality in Argentinean bread wheat genotypes with different baking aptitude? |
| title_sort | how does post flowering sources sink manipulation affect grain weight and commercial quality in argentinean bread wheat genotypes with different baking aptitude |
| topic | Wheat Genotypes Sulfur Fertilizers Nitrogen Fertilizers Trigo Genotipos Abonos Sulfurados Abonos Nitrogenados Source/sink Grain Weight Grain Protein Fuente/sumidero Peso del Grano Proteína de Grano |
| url | http://hdl.handle.net/20.500.12123/15255 https://www.sciencedirect.com/science/article/pii/S037842902300223X https://doi.org/10.1016/j.fcr.2023.109030 |
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