Wheat yield progress and stability during the last five decades in Argentina
Improvement of grain yield (GY) at farm level, which is closely related to GY potential, seems to be the main alternative to increase wheat (Triticum aestivum L) production. The aim of current research was to assess the genetic progress of GY potential and associated physiological traits as well as...
| Autores principales: | , , |
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| Formato: | Artículo |
| Lenguaje: | Inglés |
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Elsevier
2021
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| Acceso en línea: | http://hdl.handle.net/20.500.12123/9652 https://www.sciencedirect.com/science/article/abs/pii/S0378429021001295 https://doi.org/10.1016/j.fcr.2021.108183 |
| _version_ | 1855484435487522816 |
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| author | Curin, Facundo Otegui, María Elena Gonzalez, Fernanda Gabriela |
| author_browse | Curin, Facundo Gonzalez, Fernanda Gabriela Otegui, María Elena |
| author_facet | Curin, Facundo Otegui, María Elena Gonzalez, Fernanda Gabriela |
| author_sort | Curin, Facundo |
| collection | INTA Digital |
| description | Improvement of grain yield (GY) at farm level, which is closely related to GY potential, seems to be the main alternative to increase wheat (Triticum aestivum L) production. The aim of current research was to assess the genetic progress of GY potential and associated physiological traits as well as the GY stability under diverse environments of cultivars released to the Argentine market during the last five decades (1971–2011). Ten cultivars, classified into two groups of five according to the time to anthesis in late cycle (LC) and early cycle cultivars (EC), were grown under twelve environments (E1 to E12) in Pergamino, Argentina. The environmental index of GY (average of cultivar’s GY in each environment) ranged from 174 to 602 g m−2. Under potential conditions (E1 to E3, 602 to 548 g m−2), GY improved at 0.74 % per year of release (YOR) (or 4.20 g m−2 per YOR) across all cultivars. The harvest index (HI), particularly in LC, and total biomass produced at physiological maturity (BTPM), associated with crop growth rate during stem elongation (CGRSE) and total biomass produced at anthesis (BTA), particularly in EC, were improved by breeding explaining the GY potential increase. Maximum HI reached 0.46, suggesting it can be further improved in both groups, but pre-anthesis growth should continue increasing in EC, as it seemed to be a yield-limiting trait for these cultivars. Grain number per m−2 (GN) increased by recent breeding in both groups with no change in grain weight (GW). This was a consequence of greater grain number per spike (GNS) in EC, as expected, but higher spike number per m−2 (SN) in LC. Fruiting efficiency (FE, grains g−1 of spike dry weight at anthesis -SDWA-), rather than SDWA, seems to have been improved by recent breeding, turning it a key trait to further increase GN. Finally, modern cultivars out-yielded the old ones in a wide range of environments, suggesting that wide adaptation is a valid breeding strategy for Argentine conditions. |
| format | Artículo |
| id | INTA9652 |
| institution | Instituto Nacional de Tecnología Agropecuaria (INTA -Argentina) |
| language | Inglés |
| publishDate | 2021 |
| publishDateRange | 2021 |
| publishDateSort | 2021 |
| publisher | Elsevier |
| publisherStr | Elsevier |
| record_format | dspace |
| spelling | INTA96522021-06-24T11:50:21Z Wheat yield progress and stability during the last five decades in Argentina Curin, Facundo Otegui, María Elena Gonzalez, Fernanda Gabriela Trigo Mejora Genética Rendimiento de Cultivos Índice de Cosecha Wheat Genetic Gain Crop Yield Harvest Index Cultivares de Ciclo Temprano y Tardío Eficiencia de Fructificación Número de Grano Pergamino, Buenos Aires Improvement of grain yield (GY) at farm level, which is closely related to GY potential, seems to be the main alternative to increase wheat (Triticum aestivum L) production. The aim of current research was to assess the genetic progress of GY potential and associated physiological traits as well as the GY stability under diverse environments of cultivars released to the Argentine market during the last five decades (1971–2011). Ten cultivars, classified into two groups of five according to the time to anthesis in late cycle (LC) and early cycle cultivars (EC), were grown under twelve environments (E1 to E12) in Pergamino, Argentina. The environmental index of GY (average of cultivar’s GY in each environment) ranged from 174 to 602 g m−2. Under potential conditions (E1 to E3, 602 to 548 g m−2), GY improved at 0.74 % per year of release (YOR) (or 4.20 g m−2 per YOR) across all cultivars. The harvest index (HI), particularly in LC, and total biomass produced at physiological maturity (BTPM), associated with crop growth rate during stem elongation (CGRSE) and total biomass produced at anthesis (BTA), particularly in EC, were improved by breeding explaining the GY potential increase. Maximum HI reached 0.46, suggesting it can be further improved in both groups, but pre-anthesis growth should continue increasing in EC, as it seemed to be a yield-limiting trait for these cultivars. Grain number per m−2 (GN) increased by recent breeding in both groups with no change in grain weight (GW). This was a consequence of greater grain number per spike (GNS) in EC, as expected, but higher spike number per m−2 (SN) in LC. Fruiting efficiency (FE, grains g−1 of spike dry weight at anthesis -SDWA-), rather than SDWA, seems to have been improved by recent breeding, turning it a key trait to further increase GN. Finally, modern cultivars out-yielded the old ones in a wide range of environments, suggesting that wide adaptation is a valid breeding strategy for Argentine conditions. EEA Pergamino Fil: Curin, Facundo. Universidad Nacional del Noroeste de la Provincia de Buenos Aires (UNNOBA). Centro de Investigaciones y Transferencia del Noroeste de la Provincia de Buenos Aires (CITNOBA, CONICET-UNNOBA- UNSADA); Argentina Fil: Otegui, María Elena. Instituto Nacional de Tecnología Agropecuaria (INTA). Estación Experimental Agropecuaria Pergamino. Ecofisiología; Argentina Fil: Otegui, María E. Consejo Nacional de Investigaciones Científicas y Técnicas; Argentina Fil: Otegui, María E. Universidad de Buenos Aires. Facultad de Agronomía. Departamento de Producción Vegetal; Argentina Fil: González, Fernanda G. Consejo Nacional de Investigaciones Científicas y Técnicas; Argentina Fil: González, Fernanda G. Instituto Nacional de Tecnología Agropecuaria (INTA). Estación Experimental Agropecuaria Pergamino. Departamento de Ecofisiología; Argentina 2021-06-24T11:41:09Z 2021-06-24T11:41:09Z 2021-07 info:ar-repo/semantics/artículo info:eu-repo/semantics/article info:eu-repo/semantics/publishedVersion http://hdl.handle.net/20.500.12123/9652 https://www.sciencedirect.com/science/article/abs/pii/S0378429021001295 0378-4290 https://doi.org/10.1016/j.fcr.2021.108183 eng info:eu-repograntAgreement/INTA/2019-PD-E3-I060-001/2019-PD-E3-I060-001/AR./Adaptación de los cultivos al cambio climático: Bases ecofisiológicas para el manejo y la mejora genética info:eu-repo/semantics/restrictedAccess application/pdf Elsevier Field Crops Research 269 (15) : 108183. (July 2021) |
| spellingShingle | Trigo Mejora Genética Rendimiento de Cultivos Índice de Cosecha Wheat Genetic Gain Crop Yield Harvest Index Cultivares de Ciclo Temprano y Tardío Eficiencia de Fructificación Número de Grano Pergamino, Buenos Aires Curin, Facundo Otegui, María Elena Gonzalez, Fernanda Gabriela Wheat yield progress and stability during the last five decades in Argentina |
| title | Wheat yield progress and stability during the last five decades in Argentina |
| title_full | Wheat yield progress and stability during the last five decades in Argentina |
| title_fullStr | Wheat yield progress and stability during the last five decades in Argentina |
| title_full_unstemmed | Wheat yield progress and stability during the last five decades in Argentina |
| title_short | Wheat yield progress and stability during the last five decades in Argentina |
| title_sort | wheat yield progress and stability during the last five decades in argentina |
| topic | Trigo Mejora Genética Rendimiento de Cultivos Índice de Cosecha Wheat Genetic Gain Crop Yield Harvest Index Cultivares de Ciclo Temprano y Tardío Eficiencia de Fructificación Número de Grano Pergamino, Buenos Aires |
| url | http://hdl.handle.net/20.500.12123/9652 https://www.sciencedirect.com/science/article/abs/pii/S0378429021001295 https://doi.org/10.1016/j.fcr.2021.108183 |
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