Is the change of winter wheat yield under warming caused by shortened reproductive period?
文献类型：期刊论文
| 作者 | Hou, RuiXing(侯瑞星) ; Ouyang, Z ; Li, YS ; Wilson, GV ; Li, HX |
| 刊名 | ECOLOGY AND EVOLUTION
 |
| 出版日期 | 2012 |
| 卷号 | 2期号:12页码:2999-3008 |
| 关键词 | Global warming phenological stage reproductive period tiller winter wheat yield |
| 通讯作者 | Ouyang, Z |
| 英文摘要 | Previous reports from laboratory-controlled experiments and models considered that a shorter reproductive period could be the main reason for wheat yield reduction in the warmer world. However, this conclusion needs to be proved carefully by field-scale experiments. In this study, a field-scale continuous openwarming experiment was conducted to quantify the adjustment of winter wheat growth and yield under conventional tillage (CT) and no-till (NT) systems in the North China Plain (NCP). Canopy temperatures were warmed using infrared heaters between 1.0 and 1.6 degrees C (daytime and nighttime, respectively) above the control. Wheat yields under CT were not significantly reduced over the two seasons (2010 and 2011), but yields under NT were 3.3% and 6.1% lower, respectively. The growing seasons for both CT and NT were shortened 6 days in 2010 and 11 days in 2011; however, the reproductive periods were maintained. The shortened days were due to a significantly shorter springtime re-greening stage followed by minimal changes in other phenological stages (jointing, flag completed, heading, anthesis, and grain-filling). The temporal advance by warming resulted in lower growing-season mean air temperatures (MAT) for warmed plots than the control from 0.23 to 4.22 degrees C for the same subsequent phenological stages. Warming increased the number of tillers m(-2) and kernel weight, but tended to decrease the number of spikes m(-2) in the two tillage systems. The heavier kernels offset the yield reduction from smaller number of spikes. Warming increased the wheat aboveground biomass from 10% to 20% suggesting the potential to sequester more CO2. This study suggests that winter wheat might adjust its growth (shortened vegetative period to maintain reproductive period) to partly compensate for the negative effects from global warming in this temperate irrigated cropland. |
| 收录类别 | SCI |
| 资助信息 | Chinese Academy of Sciences XDA05050502；National Natural Science Foundation 31000207 |
| 公开日期 | 2013-09-09 |
| 源URL | [http://ir.igsnrr.ac.cn/handle/311030/27957]  |
| 专题 | 地理科学与资源研究所_研究生部 |
| 推荐引用方式 GB/T 7714 | Hou, RuiXing,Ouyang, Z,Li, YS,et al. Is the change of winter wheat yield under warming caused by shortened reproductive period?[J]. ECOLOGY AND EVOLUTION,2012,2(12):2999-3008. |
| APA | Hou, RuiXing,Ouyang, Z,Li, YS,Wilson, GV,&Li, HX.(2012).Is the change of winter wheat yield under warming caused by shortened reproductive period?.ECOLOGY AND EVOLUTION,2(12),2999-3008. |
| MLA | Hou, RuiXing,et al."Is the change of winter wheat yield under warming caused by shortened reproductive period?".ECOLOGY AND EVOLUTION 2.12(2012):2999-3008. |
入库方式： OAI收割
来源：地理科学与资源研究所
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