Journal
JOURNAL OF CEREAL SCIENCE
Volume 48, Issue 3, Pages 580-591Publisher
ACADEMIC PRESS LTD- ELSEVIER SCIENCE LTD
DOI: 10.1016/j.jcs.2008.01.006
Keywords
CO2 enrichment; Wheat; Grain yield; Grain quality
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Wheat (Triticum aestivum L.) is one of the most important agricultural crops worldwide. Due to its high content of starch and unique gluten proteins, wheat grain is used for many food and non-food applications. Although grain quality is an important topic for food and feed as well as industrial processing, the consequences of future increases in atmospheric carbon dioxide (CO2) concentrations on quality parameters such as nutritional and bread-making rheological properties are still unclear. Wheat productivity increases under CO2 enrichment. Concomitantly, the chemical composition of vegetative plant parts is often changed and grain quality is altered. In particular, the decrease in grain protein concentration and changes in protein composition may have serious economic and health implications. Additionally, CO2 enrichment affects amino acid composition and the concentrations of macro- and micro-elements. However, experimental results are often inconsistent. The present review summarises the results from numerous CO2 enrichment experiments using different exposure techniques in order to quantify the potential impacts of projected atmospheric CO2 levels on wheat grain yield and on aspects of grain composition relevant to processing and human nutrition. (C) 2008 Elsevier Ltd. All rights reserved.
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