Knowledge Resource Center for Ecological Environment in Arid Area
DOI | 10.1016/j.agwat.2010.06.007 |
Effects of elevated CO2 concentration on growth and water use efficiency of winter wheat under two soil water regimes | |
Qiao, Yunzhou1,2; Zhang, Huizhen3; Dong, Baodi1,2; Shi, Changhai1,2; Li, Yuxin1,2; Zhai, Hongmei1,2,4; Liu, Mengyu1,2 | |
通讯作者 | Liu, Mengyu |
来源期刊 | AGRICULTURAL WATER MANAGEMENT
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ISSN | 0378-3774 |
出版年 | 2010 |
卷号 | 97期号:11页码:1742-1748 |
英文摘要 | Winter wheat (Triticum aestivum L. cv. Kenong9204) was grown in open top chambers with either ambient or elevated CO2 concentrations (358 +/- 19 mu mol mol(-1) or 712 +/- 22 mu mol mol(-1), respectively) in well-watered or drought conditions. Although elevated CO2 did not significantly affect the height of the plants at harvest, it significantly increased the aboveground biomass by 10.1% and the root/shoot ratio by 16.0%. Elevated CO2 also significantly increased the grain yield (GY) by 6.7% when well-watered and by 10.4% when drought stressed. Specifically, in the well-watered condition, this increase was due to a greater number of ears (8.7% more) and kernels (8.6). In the drought condition, it was only due to a greater number of spikes (17.1% more). In addition, elevated CO2 also significantly increased the water use efficiency (WUE) of the plants by 9.9% when well-watered and by 13.8% under drought conditions, even though the evapotranspiration (ET) of the plants did not change significantly. Elevated CO2 also significantly increased the root length in the top half of the soil profile by 35.4% when well-watered and by 44.7% under drought conditions. Finally, elevated CO2 significantly increased the root water uptake by 52.9% when well-watered and by 10.1% under drought conditions. These results suggest that (1) future increases in atmospheric CO2 concentration may have a significant effect on wheat production in arid and semiarid areas where wheat cultivation requires upland cropping or deficit irrigation; (2) wheat cultivars can be developed to have more tillers and kernels through selective breeding and field management; and (3) fertilizer and water management in topsoil will become increasingly important as atmospheric CO2 concentration rises. (C) 2010 Elsevier B.V. All rights reserved. |
英文关键词 | Elevated CO2 concentration Grain yield (GY) Water use efficiency (WUE) Root/shoot ratio (RSR) Root distribution Soil water depletion (SWD) |
类型 | Article |
语种 | 英语 |
国家 | Peoples R China |
收录类别 | SCI-E |
WOS记录号 | WOS:000281991200004 |
WOS关键词 | CARBON-DIOXIDE ; ATMOSPHERIC CO2 ; STOMATAL CONDUCTANCE ; LEAF-AREA ; PLANT-GROWTH ; DRY-MATTER ; YIELD ; ENRICHMENT ; DROUGHT ; PHOTOSYNTHESIS |
WOS类目 | Agronomy ; Water Resources |
WOS研究方向 | Agriculture ; Water Resources |
资源类型 | 期刊论文 |
条目标识符 | http://119.78.100.177/qdio/handle/2XILL650/163070 |
作者单位 | 1.Chinese Acad Sci, Key Lab Agr Water Resources, Shijiazhuang 050021, Peoples R China; 2.Chinese Acad Sci, Inst Genet & Dev Biol, Ctr Agr Resources Res, Hebei Key Lab Agr Water Saving, Shijiazhuang 050021, Peoples R China; 3.Taizhou Univ, Sch Pharmaceut & Chem Engn, Linhai 317000, Zhejiang, Peoples R China; 4.Shijiazhuang Univ, Dept Chem, Shijiazhuang 050021, Peoples R China |
推荐引用方式 GB/T 7714 | Qiao, Yunzhou,Zhang, Huizhen,Dong, Baodi,et al. Effects of elevated CO2 concentration on growth and water use efficiency of winter wheat under two soil water regimes[J],2010,97(11):1742-1748. |
APA | Qiao, Yunzhou.,Zhang, Huizhen.,Dong, Baodi.,Shi, Changhai.,Li, Yuxin.,...&Liu, Mengyu.(2010).Effects of elevated CO2 concentration on growth and water use efficiency of winter wheat under two soil water regimes.AGRICULTURAL WATER MANAGEMENT,97(11),1742-1748. |
MLA | Qiao, Yunzhou,et al."Effects of elevated CO2 concentration on growth and water use efficiency of winter wheat under two soil water regimes".AGRICULTURAL WATER MANAGEMENT 97.11(2010):1742-1748. |
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