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| 臭氧胁迫使两优培九倒伏风险增加——FACE研究 | |
| 引用本文： | 王云霞,王晓莹,杨连新,李潘林,朱建国,王余龙.臭氧胁迫使两优培九倒伏风险增加——FACE研究[J].生态学报,2011,31(20):6098-6107. |
| 作者姓名： | 王云霞 王晓莹 杨连新 李潘林 朱建国 王余龙 |
| 作者单位： | 1. 扬州大学江苏省作物遗传生理重点实验室/农业部长江中下游作物生理生态与栽培重点开放实验室,扬州,225009 2. 中国科学院南京土壤研究所,南京,210008 3. Department of Global Agricultural Sciences,Graduate School of Agricultural and Life Sciences,University of Tokyo,1-1-1 Yayoi,Bunkyo-ku,Tokyo 113-8657 Japan |
| 基金项目： | 国家科技部国际科技合作计划项目(2009DFA31110);国家自然科学基金项目(30871486,31071359);日本环境厅全球环境研究基金项目(C-062);江苏省高校自然科学重大基础研究项目(08KJA210003);扬州大学科技创新培育基金(2008CXJ018和2009CXJ021)和江苏高校优势学科建设工程资助项目 |
| 摘 要： | 近地层臭氧(O3)浓度升高使作物生长发育受到抑制进而使产量下降,但O3胁迫条件下作物抗倒性状的变化及其可能原因均不清楚。FACE(Free Air gas Concentration Enrichment)试验在很少扰动的自然农田实施,其特有的空间优势为研究这一问题提供了最好的机会。依托全球唯一的稻田臭氧FACE技术平台,以杂交稻两优培九为供试材料,设置大气背景O3浓度和高O3浓度两个水平首次对这一问题进行了实验研究。结果表明:高O3浓度使水稻抽穗期单茎(去除叶鞘)倒5、倒4和倒3节间的平均倒伏指数分别增加25%、16%和14%,使抽穗后35 d对应节间倒伏指数分别增加13%、12%和2%,除抽穗后35 d倒3节间外均达显著或极显著水平;高浓度O3使水稻抽穗期和抽穗后35 d植株倒5、倒4和倒3节间的抗折力和弯曲力矩均下降,前者降幅明显大于后者;高O3浓度对抽穗期和抽穗后35 d倒5、倒4、倒3和倒2和倒1节间的长度和粗度影响较小,但使各节间单位长度鲜重和干重一致下降,以单位长度干重降幅更大;高O3浓度使结实期倒5、倒4、倒3、倒2和倒1节间可溶性糖和淀粉含有率均下降,抽穗后35 d降幅大于抽穗期。以上数据表明,未来高浓度臭氧环境条件下两优培九结实期的倒伏风险明显增加,这主要与基部节间抗折能力明显削弱有关,而后者可能又与节间充实程度下降有关。 |
| 关 键 词： | 水稻 臭氧(O3) FACE(Free Air gas Concentration Enrichment) 倒伏 |
| 收稿时间： | 2011/6/15 0:00:00 |
| 修稿时间： | 8/1/2011 12:00:00 AM |
Ozone stress increases lodging risk of rice cultivar Liangyoupeijiu: a FACE study |
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| WANG Yunxi,WANG Xiaoying,YANG Lianxin,LI Panlin,ZHU Jianguo and WANG Yulong.Ozone stress increases lodging risk of rice cultivar Liangyoupeijiu: a FACE study[J].Acta Ecologica Sinica,2011,31(20):6098-6107. | |
| Authors: | WANG Yunxi WANG Xiaoying YANG Lianxin LI Panlin ZHU Jianguo and WANG Yulong |
| Institution: | Key Laboratory of Crop Genetics & Physiology of Jiansu Province / Key Laboratory of Crop Physiology, Ecology and Cultivation in Middle and Lower Reaches of Yangtze River of Ministry of Agriculture, Yangzhou University, Yangzhou 225009, Jiangsu, China;Key Laboratory of Crop Genetics & Physiology of Jiansu Province / Key Laboratory of Crop Physiology, Ecology and Cultivation in Middle and Lower Reaches of Yangtze River of Ministry of Agriculture, Yangzhou University, Yangzhou 225009, Jiangsu, China;Key Laboratory of Crop Genetics & Physiology of Jiansu Province / Key Laboratory of Crop Physiology, Ecology and Cultivation in Middle and Lower Reaches of Yangtze River of Ministry of Agriculture, Yangzhou University, Yangzhou 225009, Jiangsu, China;Key Laboratory of Crop Genetics & Physiology of Jiansu Province / Key Laboratory of Crop Physiology, Ecology and Cultivation in Middle and Lower Reaches of Yangtze River of Ministry of Agriculture, Yangzhou University, Yangzhou 225009, Jiangsu, China;Institute of Soil Science, Chinese Academy of Sciences,Nanjing 210008, China;Key Laboratory of Crop Genetics & Physiology of Jiansu Province / Key Laboratory of Crop Physiology, Ecology and Cultivation in Middle and Lower Reaches of Yangtze River of Ministry of Agriculture, Yangzhou University, Yangzhou 225009, Jiangsu, China |
| Abstract: | Lodging is the common problem in rice production,which causes great losses in both yield and grain quality.Rising tropospheric ozone concentration is currently one of the most important air pollutant which suppress plant growth and thus result in yield loss of crops.However little is known about effects of elevated ozone concentration() on the lodging of rice and related mechanisms.Free Air gas Concentration Enrichment(FACE) system was designed to conduct gas fumigation experiments in natural fields,and spa... |
| Keywords: | rice ozone (O3) lodging Free Air gas Concentration Enrichment (FACE) |
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