Wheat crop traits conferring high yield potential may also improve yield stability under climate change
2023
Stella, Tommaso | Webber, Heidi | Eyshi Rezaei, Ehsan | Asseng, Senthold | Martre, Pierre | Dueri, Sibylle | Rafael Guarin, Jose | Pequeno, Diego, N L | Calderini, Daniel, F | Reynolds, Matthew | Molero, Gemma | Miralles, Daniel | Garcia, Guillermo | Slafer, Gustavo | Giunta, Francesco | Kim, Yean-Uk | Wang, Chenzhi | Ruane, Alex, C | Ewert, Frank | Leibniz-Zentrum für Agrarlandschaftsforschung = Leibniz Centre for Agricultural Landscape Research (ZALF) | Brandenburg University of Technology [Cottbus – Senftenberg] (BTU) | Technische Universität Munchen - Technical University Munich - Université Technique de Munich (TUM) | Écophysiologie des Plantes sous Stress environnementaux (LEPSE) ; Institut National de Recherche pour l’Agriculture, l’Alimentation et l’Environnement (INRAE)-Institut Agro Montpellier ; Institut national d'enseignement supérieur pour l'agriculture, l'alimentation et l'environnement (Institut Agro)-Institut national d'enseignement supérieur pour l'agriculture, l'alimentation et l'environnement (Institut Agro) | University of Florida [Gainesville] (UF) | International Maize and Wheat Improvement Center (CIMMYT) ; Consultative Group on International Agricultural Research [CGIAR] (CGIAR) | Universidad Austral de Chile | Universitad de Buenos Aires = University of Buenos Aires [Argentina] | Consejo Nacional de Investigaciones Científicas y Técnicas [Buenos Aires] (CONICET) | Universitat de Lleida | Institució Catalana de Recerca i Estudis Avançats = Catalan Institution for Research and Advanced Studies (ICREA) | Università degli Studi di Sassari = University of Sassari [Sassari] (UNISS) | NASA Goddard Institute for Space Studies (GISS) ; NASA Goddard Space Flight Center (GSFC) | Institut für Nutzpflanzenwissenschaften und Ressourcenschutz (INRES) ; Rheinische Friedrich-Wilhelms-Universität Bonn | nternational Wheat Yield Partnership (IWYP, grant IWYP115), through funding the International Maize and Wheat Improvement Center (CIMMYT) and by the Agricultural Model Intercomparison and Improvement Project (AgMIP). | metaprogram Agriculture and forestry in the face of climate change: adaptation and mitigation (CLIMAE) of the French National Research Institute for Agriculture, Food (INRAE)
International audience
Mostrar más [+] Menos [-]Inglés. Increasing genetic wheat yield potential is considered by many as critical to increasing global wheat yields and production, baring major changes in consumption patterns. Climate change challenges breeding by making target environments less predictable, altering regional productivity and potentially increasing yield variability. Here we used a crop simulation model solution in the SIMPLACE framework to explore yield sensitivity to select trait characteristics (radiation use efficiency [RUE], fruiting efficiency and light extinction coefficient) across 34 locations representing the world's wheat-producing environments, determining their relationship to increasing yields, yield variability and cultivar performance. The magnitude of the yield increase was trait-dependent and differed between irrigated and rainfed environments. RUE had the most prominent marginal effect on yield, which increased by about 45 % and 33 % in irrigated and rainfed sites, respectively, between the minimum and maximum value of the trait. Altered values of light extinction coefficient had the least effect on yield levels. Higher yields from improved traits were generally associated with increased inter-annual yield variability (measured by standard deviation), but the relative yield variability (as coefficient of variation) remained largely unchanged between base and improved genotypes. This was true under both current and future climate scenarios. In this context, our study suggests higher wheat yields from these traits would not increase climate risk for farmers and the adoption of cultivars with these traits would not be associated with increased yield variability.
Mostrar más [+] Menos [-]Palabras clave de AGROVOC
Información bibliográfica
Este registro bibliográfico ha sido proporcionado por Institut national de la recherche agronomique