Enhancing water use efficiency in wheat: 40 Years of genetic gains in the Argentine Pampas

Understanding the impact of breeding on water use and productivity, particularly in underexplored environments where pre-anthesis rainfall is often limited, is crucial for increasing wheat grain yield (GY) under future climatic scenarios. The aim of this work was to study the effects of breeding on...

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Autores principales: Curin, Facundo, Otegui, María E., González, Fernanda G.
Otros Autores: 0000-0002-1890-6359
Formato: Artículo publishedVersion
Lenguaje:Inglés
Publicado: Elsevier 2025
Materias:
Early-cycle cultivars
Late-cycle cultivars
Radiation use efficiency
Crop evapotranspiration
Breeding effects
Acceso en línea:http://repositorio.unnoba.edu.ar/xmlui/handle/23601/930
Aporte de:
Re DI Repositorio Digital UNNOBA de Universidad Nacional del Noroeste de la Provincia de Buenos Aires
id I103-R405-23601-930
record_format dspace
institution Universidad Nacional del Noroeste de la Provincia de Buenos Aires
institution_str I-103
repository_str R-405
collection Re DI Repositorio Digital UNNOBA
language Inglés
topic Early-cycle cultivars
Late-cycle cultivars
Radiation use efficiency
Crop evapotranspiration
Breeding effects
spellingShingle Early-cycle cultivars
Late-cycle cultivars
Radiation use efficiency
Crop evapotranspiration
Breeding effects
Curin, Facundo
Otegui, María E.
González, Fernanda G.
Enhancing water use efficiency in wheat: 40 Years of genetic gains in the Argentine Pampas
topic_facet Early-cycle cultivars
Late-cycle cultivars
Radiation use efficiency
Crop evapotranspiration
Breeding effects
description Understanding the impact of breeding on water use and productivity, particularly in underexplored environments where pre-anthesis rainfall is often limited, is crucial for increasing wheat grain yield (GY) under future climatic scenarios. The aim of this work was to study the effects of breeding on GY and its physiological determinants, including water use and water use efficiency among cultivars released to the Argentine market over a 40-year period. Ten Argentinean cultivars classified into early cycle (EC) and late cycle (LC), based on time to anthesis, were grown across three seasons (2015, 2016, and 2017) under irrigated, rainfed, and water restricted conditions. Breeding increased GY by enhancing the harvest index (HI) in LC cultivars and the total biomass (BT) in EC cultivars. These improvements were accompanied by increases in water use efficiency for grain yield production (WUEGY,ETc) of 1.11 % and 0.45 % per year among LC and EC cultivars, respectively, and a 0.29 % per year improvement in water use efficiency for biomass production (WUEBT,ETc) among EC cultivars. Crop evapotranspiration (ETC) decreased by 0.16 % per year exclusively in LC cultivars. Transpiration use efficiency (TE) improved by 0.55 % and 0.45 % per year for LC and EC cultivars, respectively, driven by increases in radiation use efficiency (RUE) of 0.46 % and 0.24 % per year. Notably, no changes in canopy conductance (gC) were observed. Finally, the proportion of water transpired before anthesis (pPREANT TC) decreased by 0.45 % per year in LC cultivars. The results of this study indicate that genetic improvement in Argentina has enhanced GY by increasing WUE and RUE, rather than total ETC. This is a particularly beneficial outcome for rainfed farming systems with limited water availability
author2 0000-0002-1890-6359
author_facet 0000-0002-1890-6359
Curin, Facundo
Otegui, María E.
González, Fernanda G.
format Artículo
Artículo
publishedVersion
Artículo
Artículo
publishedVersion
Artículo
Artículo
publishedVersion
author Curin, Facundo
Otegui, María E.
González, Fernanda G.
author_sort Curin, Facundo
title Enhancing water use efficiency in wheat: 40 Years of genetic gains in the Argentine Pampas
title_short Enhancing water use efficiency in wheat: 40 Years of genetic gains in the Argentine Pampas
title_full Enhancing water use efficiency in wheat: 40 Years of genetic gains in the Argentine Pampas
title_fullStr Enhancing water use efficiency in wheat: 40 Years of genetic gains in the Argentine Pampas
title_full_unstemmed Enhancing water use efficiency in wheat: 40 Years of genetic gains in the Argentine Pampas
title_sort enhancing water use efficiency in wheat: 40 years of genetic gains in the argentine pampas
publisher Elsevier
publishDate 2025
url http://repositorio.unnoba.edu.ar/xmlui/handle/23601/930
work_keys_str_mv AT curinfacundo enhancingwateruseefficiencyinwheat40yearsofgeneticgainsintheargentinepampas
AT oteguimariae enhancingwateruseefficiencyinwheat40yearsofgeneticgainsintheargentinepampas
AT gonzalezfernandag enhancingwateruseefficiencyinwheat40yearsofgeneticgainsintheargentinepampas
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spelling I103-R405-23601-9302025-08-20T20:49:38Z Enhancing water use efficiency in wheat: 40 Years of genetic gains in the Argentine Pampas Curin, Facundo Otegui, María E. González, Fernanda G. 0000-0002-1890-6359 0000-0002-8338-9036 0000-0001-9670-0316 Early-cycle cultivars Late-cycle cultivars Radiation use efficiency Crop evapotranspiration Breeding effects Understanding the impact of breeding on water use and productivity, particularly in underexplored environments where pre-anthesis rainfall is often limited, is crucial for increasing wheat grain yield (GY) under future climatic scenarios. The aim of this work was to study the effects of breeding on GY and its physiological determinants, including water use and water use efficiency among cultivars released to the Argentine market over a 40-year period. Ten Argentinean cultivars classified into early cycle (EC) and late cycle (LC), based on time to anthesis, were grown across three seasons (2015, 2016, and 2017) under irrigated, rainfed, and water restricted conditions. Breeding increased GY by enhancing the harvest index (HI) in LC cultivars and the total biomass (BT) in EC cultivars. These improvements were accompanied by increases in water use efficiency for grain yield production (WUEGY,ETc) of 1.11 % and 0.45 % per year among LC and EC cultivars, respectively, and a 0.29 % per year improvement in water use efficiency for biomass production (WUEBT,ETc) among EC cultivars. Crop evapotranspiration (ETC) decreased by 0.16 % per year exclusively in LC cultivars. Transpiration use efficiency (TE) improved by 0.55 % and 0.45 % per year for LC and EC cultivars, respectively, driven by increases in radiation use efficiency (RUE) of 0.46 % and 0.24 % per year. Notably, no changes in canopy conductance (gC) were observed. Finally, the proportion of water transpired before anthesis (pPREANT TC) decreased by 0.45 % per year in LC cultivars. The results of this study indicate that genetic improvement in Argentina has enhanced GY by increasing WUE and RUE, rather than total ETC. This is a particularly beneficial outcome for rainfed farming systems with limited water availability Fil: Curin, Facundo. Centro de Investigaciones y Transferencias del Noroeste de la Provincia de Buenos Aires; Argentina. Fil: Curin, Facundo. Universidad Nacional del Noroeste de la Provincia de Buenos Aires; 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 Técnica. Centro Regional Buenos Aires Norte. Estación Experimental Pergamino; Argentina. Fil: González, Fernanda G. Centro de Investigaciones y Transferencias del Noroeste de la Provincia de Buenos Aires; Argentina. Fil: González, Fernanda G. Universidad Nacional del Noroeste de la Provincia de Buenos Aires; Argentina. Fil: González, Fernanda G. Centro Regional Buenos Aires Norte. Estación Experimental Pergamino; Argentina. Con referato 2025-08-20T20:12:15Z 2025-08-20T20:12:15Z 2025-04-02 info:eu-repo/semantics/article info:ar-repo/semantics/artículo info:eu-repo/semantics/publishedVersion info:eu-repo/semantics/article info:ar-repo/semantics/artículo info:eu-repo/semantics/publishedVersion info:eu-repo/semantics/article info:ar-repo/semantics/artículo info:eu-repo/semantics/publishedVersion Facundo Curin, María E. Otegui y Fernanda G. González (2025). Enhancing water use efficiency in wheat: 40 Years of genetic gains in the Argentine Pampas. European Journal of Agronomy, 168. https://doi.org/10.1016/j.eja.2025.127620 1161-0301 1161-0301 http://repositorio.unnoba.edu.ar/xmlui/handle/23601/930 eng info:eu-repo/grantAgreement/ANPCyT/PICT 2015-2671/AR. Ciudad Autónoma de Buenos Aires/Mejoramiento de cultivos extensivos para condiciones de estrés hídrico: escalando niveles desde el laboratorio a la producción con una organización interdisciplinaria/ info:eu-repo/grantAgreement/ANPCyT/PICT 2019-3256/AR/Ciudad Autónoma de Buenos Aires/Estudios fisiológicos y genéticos de dos atributos promisorios para mejorar el rendimiento potencial en trigo (Triticum aestivum L): respuesta a fotoperíodo durante etapas pre antesis y coeficiente de fertilidad de la espiga/ info:eu-repo/grantAgreement/INTA/PD 2023/I102/AR/Pergamino/Bases ecofisiológicas para mejorar la adaptación de los cultivos a la variabilidad ambiental mediante el manejo agronómico y el mejoramiento genético/ info:eu-repo/grantAgreement/UNNOBA/SIB 2019-0544/AR.Pergamino/Rendimiento potencial y eficiencia en el uso de agua y nitrógeno en trigo y maíz: identificación de bases ecofisiológicas y genéticas para mejoramiento/ info:eu-repo/grantAgreement/CONICET/PIO 2015/15720150100005CO/AR/Ciudad Autónoma de Buenos Aires/Bases fisiológicas y genéticas de la tolerancia a estrés abiótico en cultivos agrícolas de importancia en el noroeste bonaerense/ https://doi.org/10.1016/j.eja.2025.127620 info:eu-repo/semantics/closedAccess https://creativecommons.org/licenses/by-nc-nd/2.5/ar/ application/pdf application/pdf Elsevier European Journal of Agronomy

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