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Next generation of elevated [CO2] experiments with crops: a critical investment for feeding the future world

pmid: 18518914
handle: 20.500.14243/7541 , 10067/716000151162165141 , 2381/8977 , 1885/61006
ABSTRACTA rising global population and demand for protein‐rich diets are increasing pressure to maximize agricultural productivity. Rising atmospheric [CO2] is altering global temperature and precipitation patterns, which challenges agricultural productivity. While rising [CO2] provides a unique opportunity to increase the productivity of C3 crops, average yield stimulation observed to date is well below potential gains. Thus, there is room for improving productivity. However, only a fraction of available germplasm of crops has been tested for CO2 responsiveness. Yield is a complex phenotypic trait determined by the interactions of a genotype with the environment. Selection of promising genotypes and characterization of response mechanisms will only be effective if crop improvement and systems biology approaches are closely linked to production environments, that is, on the farm within major growing regions. Free air CO2 enrichment (FACE) experiments can provide the platform upon which to conduct genetic screening and elucidate the inheritance and mechanisms that underlie genotypic differences in productivity under elevated [CO2]. We propose a new generation of large‐scale, low‐cost per unit area FACE experiments to identify the most CO2‐responsive genotypes and provide starting lines for future breeding programmes. This is necessary if we are to realize the potential for yield gains in the future.
- Département Sciences sociales, agriculture et alimentation, espace et environnement France
- Max Planck Society Germany
- University of Tasmania Australia
- Agricultural Research Service United States
- Australian National University Australia
precipitation (climatology), GENETIC VARIATION, Greenhouse Effect, genotype, Acclimatization, CLIMATE CHANGE, atmospheric carbon-dioxide, 630, F30 - Génétique et amélioration des plantes, Food Supply, Photosynthesis, Génétique, [SDV.EE]Life Sciences [q-bio]/Ecology, environment, catering service, Air, article, germplasm, acclimatization, [SDV.EE] Life Sciences [q-bio]/Ecology, environment, enrichment system, climate change, Rendement des cultures, Phenotype, Research Design, climate-change, environment, Crops, Agricultural, Genotype, air, growth, crop production, Politique de développement, Laboratorium voor Erfelijkheidsleer, experimental study, 333, Keywords: carbon dioxide, Projet de recherche, A50 - Recherche agronomique, CROP YIELD, FACE, [SDV.EE]Life Sciences [q-bio]/Ecology, plant breeding, ge Climate change, crop, PROJET RECHERCHE, Biology, Changement climatique, photosynthesis, face, carbon dioxide, crop yield, Carbon Dioxide, yield, open-air elevation, stomatal conductance, genetic variation, E14 - Economie et politique du développement, responses, Plante de culture, global climate, Dioxyde de carbone, agrovoc: agrovoc:c_1302, agrovoc: agrovoc:c_1666, agrovoc: agrovoc:c_2228, agrovoc: agrovoc:c_1972, agrovoc: agrovoc:c_24891, agrovoc: agrovoc:c_3222, agrovoc: agrovoc:c_10176
precipitation (climatology), GENETIC VARIATION, Greenhouse Effect, genotype, Acclimatization, CLIMATE CHANGE, atmospheric carbon-dioxide, 630, F30 - Génétique et amélioration des plantes, Food Supply, Photosynthesis, Génétique, [SDV.EE]Life Sciences [q-bio]/Ecology, environment, catering service, Air, article, germplasm, acclimatization, [SDV.EE] Life Sciences [q-bio]/Ecology, environment, enrichment system, climate change, Rendement des cultures, Phenotype, Research Design, climate-change, environment, Crops, Agricultural, Genotype, air, growth, crop production, Politique de développement, Laboratorium voor Erfelijkheidsleer, experimental study, 333, Keywords: carbon dioxide, Projet de recherche, A50 - Recherche agronomique, CROP YIELD, FACE, [SDV.EE]Life Sciences [q-bio]/Ecology, plant breeding, ge Climate change, crop, PROJET RECHERCHE, Biology, Changement climatique, photosynthesis, face, carbon dioxide, crop yield, Carbon Dioxide, yield, open-air elevation, stomatal conductance, genetic variation, E14 - Economie et politique du développement, responses, Plante de culture, global climate, Dioxyde de carbone, agrovoc: agrovoc:c_1302, agrovoc: agrovoc:c_1666, agrovoc: agrovoc:c_2228, agrovoc: agrovoc:c_1972, agrovoc: agrovoc:c_24891, agrovoc: agrovoc:c_3222, agrovoc: agrovoc:c_10176
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