Journal article · Preprint article
Grain protein concentration and harvestable protein under future climate conditions. A study of 108 spring barley accessions
Department of Chemical and Biochemical Engineering, Technical University of Denmark1
Aarhus University2
Department of Environmental Engineering, Technical University of Denmark3
Department of Applied Mathematics and Computer Science, Technical University of Denmark4
Statistics and Data Analysis, Department of Applied Mathematics and Computer Science, Technical University of Denmark5
In the present study a set of 108 spring barley (H. vulgare L.) accessions were cultivated under predicted future levels of temperature and [CO2] as single factors and in combination (IPCC, AR5, RCP8.5). Across all genotypes, elevated [CO2] (700 ppm day/night) slightly decreased protein concentration by 5%, while elevated temperature (+5 °C day/night) substantially increased protein concentration by 29%.
The combined treatment increased protein concentration across accessions by 8%. This was an increase less than predicted from strictly additive effects of the individual treatments. Despite the increase in grain protein concentration, the decrease in grain yield at combined elevated temperature and elevated [CO2] resulted in 23% less harvestable protein.
There was variation in the response of the 108 accessions, which might be exploited to at least maintain if not increase harvestable grain protein under future climate change conditions.
| Language: | English |
|---|---|
| Publisher: | Oxford University Press |
| Year: | 2016 |
| Pages: | 2151-2158 |
| ISSN: | 14602431 and 00220957 |
| Types: | Journal article and Preprint article |
| DOI: | 10.1093/jxb/erw033 |
| ORCIDs: | Mikkelsen, Teis Nørgaard , Stockmarr, Anders , Bagger Jørgensen, Rikke and 0000-0003-3133-2350 |
Climate change Elevated carbon dioxide Elevated temperature Grain protein harvested Near-infrared spectroscopy SDG 13 - Climate Action Two-factor treatment
Air and water emissions Breeding Carbon Dioxide Climate Change Crop health, quality, protection Ecotype Hordeum Models, Biological Plant Proteins Seasons Seeds Spectroscopy, Near-Infrared elevated carbon dioxide elevated temperature grain protein harvested near-infrared spectroscopy two-factor treatment two-factor treatment.
