| 小麦不同生育期对UV-B敏感差异性比较 |
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| 引用本文： | 王传海,郑有飞,陈敏东,闵锦忠.小麦不同生育期对UV-B敏感差异性比较[J].生态环境,2004,13(4):483-486. |
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| 作者姓名： | 王传海 郑有飞 陈敏东 闵锦忠 |
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| 作者单位： | 1. 南京气象学院环境科学系,江苏,南京,210044
2. 南京气象学院,江苏省气象灾害和环境变化重点开放实验室,江苏,南京,210044 |
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| 基金项目： | 国家自然科学基金项目(40175029)，江苏省“333 工程”联合资助项目 |
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| 摘 要： | 在大田群体条件下,比较研究了小麦不同生育期对UV-B增加反应敏感性的差异。小麦的生长指标和反应指数均表明:小麦不同生育期对UV-B增加反应的敏感性(设其符号为u)存在显著的差异,小麦的拔节至孕穗期是小麦对UV-B增加的最敏感的时期,小麦对UV-B增加的敏感性大小顺序为:u(拔节期)>u(孕穗期至开花期)>u(灌浆期)>u(播种至拔节期);在不同生育期降低UV-B强度的试验结果也验证了这一结果。在南京地区UV-B强度较高的季节小麦对UV-B增加的敏感性较低。
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| 关 键 词： | UV-B 小麦 产量 反应指数 敏感性 |
| 文章编号： | 1672-2175(2004)04-0483-04 |
| 修稿时间： | 2004年3月12日 |
Differences in sensitivity to enhanced UV-B radiation of wheat at different growth stages |
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| WANG Chuan-hai,ZHENG You-fei,CHENG Ming-dong,MIN Jing-zhong.Differences in sensitivity to enhanced UV-B radiation of wheat at different growth stages[J].Ecology and Environmnet,2004,13(4):483-486. |
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| Authors: | WANG Chuan-hai ZHENG You-fei CHENG Ming-dong MIN Jing-zhong |
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| Institution: | WANG Chuan-hai,ZHENG You-fei,CHENG Ming-dong,MIN Jing-zhong Department of Environmental Sciences,Nanjing Institute of Meteorology,Nanjing 210044,China |
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| Abstract: | Differences in sensitivity to enhanced UV-B radiation on wheat at different growth stages were investigated in terms of morphological, physiological parameters and response indices under field conditions. The growth parameters and response indeices indicated a big differences in the sensitivities of wheats at different growth stages to enhanced UV-B, which was in the order of that of elongation stage > of pregnant > of grain filling >of stages from seeding to elongation. The result of lowering UV-B radiation at different wheat growth stages confirmed that the stage from elongation to pregnant was the most sensitive stage of wheat to UV-B radiation. |
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| Keywords: | UV-B enhancement wheat yield response index sensitivity |
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