| 臭氧浓度升高对大豆光合作用及产量的影响 |
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| 引用本文： | 金东艳,赵天宏,付宇,孙加伟,黄爽.臭氧浓度升高对大豆光合作用及产量的影响[J].大豆科学,2009,28(4). |
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| 作者姓名： | 金东艳 赵天宏 付宇 孙加伟 黄爽 |
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| 作者单位： | 沈阳农业大学农学院,辽宁,沈阳,110161 |
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| 基金项目： | 国家自然科学基金资助项目 |
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| 摘 要： | 研究大气O3浓度升高对大豆光合作用及籽粒产量的影响,利用开顶式气室对大豆进行熏蒸,测定大豆叶片净光合速率、气孔导度等光合指标,以及大豆叶片的Chla、Chlb、Chl(a+b)及Chla/b值.结果表明:在整个生育期中,与对照相比,高浓度O3(110 nmol·mol-1)熏蒸下,大豆叶片Pn呈极显著下降(P＜0.01),Gs、Ci、Tr均先增高后降低,叶绿素含量下降.大豆百粒重下降不显著(P＞0.05),而单株荚数、单株粒重和单株粒数下降达极显著水平(P＜0.01).说明大气O3浓度升高对大豆植株具有伤害作用,通过减弱叶片光合作用强度,减少大豆开花数量、阻碍花粉受精过程,从而降低大豆产量.
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| 关 键 词： | 臭氧浓度升高 大豆 光合作用 产量 |
Effects of Elevated Ozone Concentration on Soybean Photosynthesis and Yield |
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| JIN Dong-yan,ZHAO Tian-hong,FU Yu,SUN Jia-wei,HUANG Shuang.Effects of Elevated Ozone Concentration on Soybean Photosynthesis and Yield[J].Soybean Science,2009,28(4). |
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| Authors: | JIN Dong-yan ZHAO Tian-hong FU Yu SUN Jia-wei HUANG Shuang |
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| Institution: | JIN Dong-yan,ZHAO Tian-hong,FU Yu,SUN Jia-wei,HUANG Shuang(College of Agronomy,Shenyang Agricultural University,Shenyang 110161,Liaoning,China) |
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| Abstract: | In recent years,the elevated ozone has some significant effects on plant photosynthesis,respiration,water availability and so on.In this paper,the effects of the elevated ozone concentrations on soybean photosynthesis and yield were studied in use of open-top chambers.Photosynthetic traits of Pn,Gs,Ci,Tr and contents of Chla,Chlb,Chl(a+b) and Chla/b were determined.The results showed that Pn reduced significantly(P<0.01),Gs,Ci and Tr ascended firstly and declined following,the contents of Chla,Chlb,Chl(a+b)... |
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| Keywords: | Elevated ozone Soybean Photosynthesis Yield |
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