Water and radiation use efficiencies in maize: breeding effects on single-cross Argentine hybrids released between 1980 and 2012
Water deficit has been signaled as an important determinant of grain yield (GY) gaps between potential and actual GYs. Breeding for improved water as well as solar radiation productivities is a sustainable means to reduce this gap. The aim of this study was to evaluate breeding effects on GY and its...
| Autores principales: | , , , |
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| Formato: | info:ar-repo/semantics/artículo |
| Lenguaje: | Inglés |
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Elsevier
2019
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| Materias: | |
| Acceso en línea: | https://www.sciencedirect.com/science/article/pii/S0378429019316211 http://hdl.handle.net/20.500.12123/6570 https://doi.org/10.1016/j.fcr.2019.107683 |
| _version_ | 1855035699431997440 |
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| author | Curin, Facundo Severini, Alan David Gonzalez, Fernanda Gabriela Otegui, María Elena |
| author_browse | Curin, Facundo Gonzalez, Fernanda Gabriela Otegui, María Elena Severini, Alan David |
| author_facet | Curin, Facundo Severini, Alan David Gonzalez, Fernanda Gabriela Otegui, María Elena |
| author_sort | Curin, Facundo |
| collection | INTA Digital |
| description | Water deficit has been signaled as an important determinant of grain yield (GY) gaps between potential and actual GYs. Breeding for improved water as well as solar radiation productivities is a sustainable means to reduce this gap. The aim of this study was to evaluate breeding effects on GY and its physiological determinants, including water (WUE) and radiation (RUE) use efficiencies, of temperate maize hybrids grown under a wide range of environmental conditions in Argentina. We hypothesized that breeding focused on GY performance and broad adaptation produced an increase in crop biomass linked to an increased tolerance to adverse growing conditions, a trend associated with an increase in WUE and/or RUE. For this purpose, hybrids were grown under three stand densities and eight environmental conditions in the main target environment for the production of temperate hybrids in Argentina. Analyzed traits were GY, total shoot biomass (BT) production, harvest index (HI = GY/BT), crop evapotranspiration (ETC), crop radiation interception (IPARC: cumulative amount of intercepted incident photosynthetically active radiation), radiation use efficiency (RUE = BT/IPARC), water use efficiency (WUE) for biomass production (WUEB,ETc= BT/ETC) and WUE for GY production (WUEGY,ETc= GY/ETC). No breeding effect was registered on ETC and IPARC, whereas significant breeding effects (P < 0.05) were detected on GY (0.5 % YOR−1 from 1980 onwards). The latter were due to the improvement of BT (from 1993 onwards) as well as of HI (between 1980 and 1993), with gains of 0.5 % YOR−1 in both cases. Mentioned trends were associated with a significant increase in RUE (0.7 % YOR−1 from 1993 onwards) and consequently in WUEB,ETc (0.6 % YOR−1 from 1993 onwards) and WUEGY,ETc (0.5 % YOR−1 from 1980 onwards). Results demonstrated that breeding efforts, which have been driven almost exclusively by GY improvement, had no evident effect on the crop water use but had clear effects on crop biomass production and its partitioning. These unintended positive effects of breeding on RUE and WUEs are welcome on a global scale, considering that predicted trends of increasing human demand for water will require increased water productivity rather than increased water use by crops. |
| format | info:ar-repo/semantics/artículo |
| id | INTA6570 |
| institution | Instituto Nacional de Tecnología Agropecuaria (INTA -Argentina) |
| language | Inglés |
| publishDate | 2019 |
| publishDateRange | 2019 |
| publishDateSort | 2019 |
| publisher | Elsevier |
| publisherStr | Elsevier |
| record_format | dspace |
| spelling | INTA65702019-12-26T12:21:09Z Water and radiation use efficiencies in maize: breeding effects on single-cross Argentine hybrids released between 1980 and 2012 Curin, Facundo Severini, Alan David Gonzalez, Fernanda Gabriela Otegui, María Elena Maíz Zea mays Rendimiento Biomasa Uso del Agua Maize Yields Biomass Water Use Hybrids Híbridos Efecto Reproductivo Water deficit has been signaled as an important determinant of grain yield (GY) gaps between potential and actual GYs. Breeding for improved water as well as solar radiation productivities is a sustainable means to reduce this gap. The aim of this study was to evaluate breeding effects on GY and its physiological determinants, including water (WUE) and radiation (RUE) use efficiencies, of temperate maize hybrids grown under a wide range of environmental conditions in Argentina. We hypothesized that breeding focused on GY performance and broad adaptation produced an increase in crop biomass linked to an increased tolerance to adverse growing conditions, a trend associated with an increase in WUE and/or RUE. For this purpose, hybrids were grown under three stand densities and eight environmental conditions in the main target environment for the production of temperate hybrids in Argentina. Analyzed traits were GY, total shoot biomass (BT) production, harvest index (HI = GY/BT), crop evapotranspiration (ETC), crop radiation interception (IPARC: cumulative amount of intercepted incident photosynthetically active radiation), radiation use efficiency (RUE = BT/IPARC), water use efficiency (WUE) for biomass production (WUEB,ETc= BT/ETC) and WUE for GY production (WUEGY,ETc= GY/ETC). No breeding effect was registered on ETC and IPARC, whereas significant breeding effects (P < 0.05) were detected on GY (0.5 % YOR−1 from 1980 onwards). The latter were due to the improvement of BT (from 1993 onwards) as well as of HI (between 1980 and 1993), with gains of 0.5 % YOR−1 in both cases. Mentioned trends were associated with a significant increase in RUE (0.7 % YOR−1 from 1993 onwards) and consequently in WUEB,ETc (0.6 % YOR−1 from 1993 onwards) and WUEGY,ETc (0.5 % YOR−1 from 1980 onwards). Results demonstrated that breeding efforts, which have been driven almost exclusively by GY improvement, had no evident effect on the crop water use but had clear effects on crop biomass production and its partitioning. These unintended positive effects of breeding on RUE and WUEs are welcome on a global scale, considering that predicted trends of increasing human demand for water will require increased water productivity rather than increased water use by crops. EEA Pergamino Fil: Curín, Facundo. CONICET-UNNOBA. CITNOBA, (Pergamino); Argentina Fil: Severini, Alan. Instituto Nacional de Tecnología Agropecuaria (INTA). Estación Experimental Agropecuaria Pergamino. Sección Ecofisiología; Argentina. Universidad Nacional del Noroeste de la Provincia de Buenos Aire. Escuela de Ciencias Agrarias, Naturales y Ambientales (ECANA-UNNOBA); Argentina Fil: González, Fernanda G. Instituto Nacional de Tecnología Agropecuaria (INTA). Estación Experimental Agropecuaria Pergamino. Sección Ecofisiología; Argentina. CONICET-UNNOBA.CITNOBA; Argentina. Universidad Nacional del Noroeste de la Provincia de Buenos Aire. Escuela de Ciencias Agrarias, Naturales y Ambientales (ECANA-UNNOBA); Argentina Fil: Otegui, María E. Consejo Nacional de Investigaciones Científicas y Técnicas; Argentina. Universidad de Buenos Aires. Facultad de Agronomía. Departamento de Producción Vegetal; Argentina 2019-12-26T12:16:02Z 2019-12-26T12:16:02Z 2019-11 info:ar-repo/semantics/artículo info:eu-repo/semantics/article info:eu-repo/semantics/publishedVersion https://www.sciencedirect.com/science/article/pii/S0378429019316211 http://hdl.handle.net/20.500.12123/6570 0378-4290 https://doi.org/10.1016/j.fcr.2019.107683 eng info:eu-repo/semantics/restrictedAccess application/pdf 1980-2012 Elsevier Field Crops Research 246 : 107683. (February 2020) |
| spellingShingle | Maíz Zea mays Rendimiento Biomasa Uso del Agua Maize Yields Biomass Water Use Hybrids Híbridos Efecto Reproductivo Curin, Facundo Severini, Alan David Gonzalez, Fernanda Gabriela Otegui, María Elena Water and radiation use efficiencies in maize: breeding effects on single-cross Argentine hybrids released between 1980 and 2012 |
| title | Water and radiation use efficiencies in maize: breeding effects on single-cross Argentine hybrids released between 1980 and 2012 |
| title_full | Water and radiation use efficiencies in maize: breeding effects on single-cross Argentine hybrids released between 1980 and 2012 |
| title_fullStr | Water and radiation use efficiencies in maize: breeding effects on single-cross Argentine hybrids released between 1980 and 2012 |
| title_full_unstemmed | Water and radiation use efficiencies in maize: breeding effects on single-cross Argentine hybrids released between 1980 and 2012 |
| title_short | Water and radiation use efficiencies in maize: breeding effects on single-cross Argentine hybrids released between 1980 and 2012 |
| title_sort | water and radiation use efficiencies in maize breeding effects on single cross argentine hybrids released between 1980 and 2012 |
| topic | Maíz Zea mays Rendimiento Biomasa Uso del Agua Maize Yields Biomass Water Use Hybrids Híbridos Efecto Reproductivo |
| url | https://www.sciencedirect.com/science/article/pii/S0378429019316211 http://hdl.handle.net/20.500.12123/6570 https://doi.org/10.1016/j.fcr.2019.107683 |
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