title: [Effects of CO2 enrichment on grain quality of rice and wheat: a research review].
abstract: Crop grain quality is mainly depended on variety's genetic characteristics and environmental conditions, while elevated CO2 concentration in atmosphere, one of the main factors resulting in global climate change, would have a significant effect on crop grain quality. In this paper, the research progress on the effects of CO2 enrichment on rice and wheat grain quality was summarized from the aspects of protein and nitrogen contents, trace elements, and other characters, emphasized the necessity and urgency of the study in this field, and pointed out the key directions and contents of further study, i.e., (a) direct effects of CO2 enrichment on rice and wheat grain quality and their differences for different varieties, (b) integrated effects of CO2 enrichment and other climate factors on rice and wheat grain quality and their quantitative indices, (c) action mechanisms of CO2 enrichment and other climate factors on rice and wheat grain quality formation, (d) longterm directions and strategies of rice and wheat breeding in quality improvement to adapt climate change, (e) integrated planting technology systems in quality improvement for adapting climate change, and (f) application of molecule-marker and gene-transfer in rice and wheat breeding for quality improvement.
authors.affiliation: Institute of Environment and Sustainable Development in Agriculture, Chinese Academy of Agricultural Sciences, Beijing 100081, China. xly0910@yahoo.com.cn
authors.forename: Li-Yong
authors.initials: LY
authors.lastname: Xie
authors.forename: Er-Da
authors.initials: ED
authors.lastname: Lin
mesh_terms: D000388:Air / Q000032:analysis; D002245:Carbon Dioxide / Q000378:metabolism*; D017752:Greenhouse Effect; D009584:Nitrogen / Q000032:analysis; D012275:Oryza / Q000254:growth & development* / Q000378:metabolism; D010940:Plant Proteins / Q000032:analysis*; D011786:Quality Control; D014908:Triticum / Q000254:growth & development* / Q000378:metabolism
chemical_list: D010940:Plant Proteins; D002245:Carbon Dioxide; D009584:Nitrogen