| Registro completo |
| Provedor de dados: |
Organic Eprints
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| País: |
Germany
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| Título: |
Significant decrease in yield under future climate conditions: Stabilityand production of 138 spring barley accessions
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| Autores: |
Ingvordsen, Cathrine Heinz
Backes, Gunter
Lyngkjær, M.
Peltonen-Sainio, Pirjo
Jensen, Jens D.
Jalli, Marja
Jahoor, Ahmed
Rasmussen, Morten
Mikkelsen, Tesi N.
Stockmarr, A.
Jørgensen, Rikke Bagger
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| Data: |
2015-01
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| Ano: |
2015
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| Palavras-chave: |
Production systems Food security
Food quality and human health Air and water emissions Breeding
Genetics and propagation
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| Resumo: |
tThe response in production parameters to projected future levels of temperature, atmospheric carbondioxide ([CO2]), and ozone ([O3]) was investigated in 138 spring barley accessions. The comprehensive setof landraces, cultivars, and breeder-lines, were during their entire life cycle exposed to a two-factor treat-ment of combined elevated temperature (+5°C day/night) and [CO2] (700 ppm), as well as single-factortreatments of elevated temperature (+5°C day/night), [CO2] (700 ppm), and [O3] (100–150 ppb). Thecontrol treatment was equivalent to present average South Scandinavian climate (temperature: 19/12◦C(day/night), [CO2]: 385 ppm). Overall grain yield was found to decrease 29% in the two-factor treatmentwith concurrent elevation of [CO2] and temperature, and this response could not be predicted from theresults of treatments with elevated [CO2] and temperature as single factors, where grain yield increased16% and decreased 56%, respectively. Elevated [O3] was found to decrease grain yield by 15%. Substantialvariation in response to the applied climate treatments was found between the accessions. The resultsrevealed landraces, cultivars, and breeder-lines with phenotypes applicable for breeding towards stableand high yield under future climate conditions. Further, we suggest identifying resources for breedingunder multifactor climate conditions, as single-factor treatments did not accurately forecast the response,when factors were combined.
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| Tipo: |
Journal paper
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| Identificador: |
http://orgprints.org/28030/7/28030.pdf
Ingvordsen, Cathrine Heinz ; Backes, Gunter; Lyngkjær, M.; Peltonen-Sainio, Pirjo; Jensen, Jens D.; Jalli, Marja; Jahoor, Ahmed; Rasmussen, Morten; Mikkelsen, Tesi N.; Stockmarr, A. and Jørgensen, Rikke Bagger (2015) Significant decrease in yield under future climate conditions: Stabilityand production of 138 spring barley accessions. European Journal of Agronomy, 63, pp. 105-113.
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| Relação: |
http://orgprints.org/28030/
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| Formato: |
application/pdf
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