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自由大气CO2浓度升高对夏大豆光合色素含量和光合作用的影响
引用本文:高霁.自由大气CO2浓度升高对夏大豆光合色素含量和光合作用的影响[J].中国农学通报,2012,28(6):47-52.
作者姓名:高霁
作者单位:1. 首都师范大学,北京100048;中国农业科学院农业环境与可持续发展研究所,北京100081;山西农业大学,山西太谷030801
2. 中国农业科学院农业环境与可持续发展研究所,北京100081;山西农业大学,山西太谷030801
3. 中国农业科学院农业环境与可持续发展研究所,北京,100081
4. 首都师范大学,北京100048;中国农业科学院农业环境与可持续发展研究所,北京100081
基金项目:中英合作项目“中国农业对气候变化脆弱性及适应能力建设”(H5105001); 国家重点基础研究发展计划项目(973计划)(2012CB955904); 中央公益型科研院所基本科研业务费专项资金
摘    要:研究大气CO2浓度升高对大豆光合指标的影响,有助于了解未来气候变化后大豆光合生理的变化。利用开放式自由大气CO2浓度富集系统(Free Air CO2 Enrichment)在高CO2浓度(550±60 μmol/mol左右)和对照大气CO2浓度(平均389±40 μmol/mol左右)及2种施氮水平下种植‘中黄35’和‘中黄13’大豆品种,测定了2个大豆品种的叶绿素、类胡萝卜素含量及光合作用的变化。结果表明:CO2浓度升高对大豆功能叶光合色素含量的影响存在品种差异,初花期‘中黄13’光合色素含量变化不显著,但在盛荚期光合色素显著下降,且在低肥处理下更明显,对‘中黄35’没有影响。大气CO2浓度升高后,2个品种大豆净光合速率均明显升高,气孔导度下降。大豆净光合速率提高将促使作物积累更多的有机物,有利于作物生物量和产量的提高。气孔导度下降可能会使作物蒸腾作用减弱,有利于作物水分利用率的提高。

关 键 词:环境敏感指数  环境敏感指数  环境适应指数  环境脆弱指数  主成分分析  铜川市  
收稿时间:8/9/2011 12:00:00 AM
修稿时间:2011/12/23 0:00:00

Effect of Elevated [CO2] on Photosynthetic Pigment Contents and Photosynthesis of Summer Soybean
Gao Ji , Hao Xingyu , Ju Hui , Li Yingchun , Lin Erda.Effect of Elevated [CO2] on Photosynthetic Pigment Contents and Photosynthesis of Summer Soybean[J].Chinese Agricultural Science Bulletin,2012,28(6):47-52.
Authors:Gao Ji  Hao Xingyu  Ju Hui  Li Yingchun  Lin Erda
Institution:1Capital Normal University,Beijing 100048;2Institute of Environment and Sustainable Development in Agriculture,Chinese Academy of Agricultural Sciences,Beijing 100081;3Shanxi Agricultural University,Taigu Shanxi 030801)
Abstract:Research on photosynthesis parameter of summer soybean response to elevated CO2] could help to learn about photosynthesis physiological changes of summer soybean under future Climate Change.The objective of this study was to investigate the effect of elevated(550±60 mmol/mol) CO2] on photosynthetic pigment contents,photosynthesis of two soybean cultivars '(Zhonghuang13'and'Zhonghuang35') with two nitrogen levels at the Free-Air Carbon dioxide Enrichment(FACE) experimental facility.The results showed that the reaction of photosynthetic pigment contents including chlorophyll a,chlorophyll b,total chlorophyll contents and carotenoid contents of soybean to high CO2 levels was difference for the two soybeans.It was not changed for'Zhonghuang35'in flowering and pod period but reduced for'Zhonghuang13'in pod period.The photosynthetic rates(Pn) of the two cultivars soybean were increased and the stomatal conductance was decreased with the high CO2 level.Pn increase could help soybean to better use the light,accumulate more organisms and increase the biomass and yield.The stomatal conductance decrease might reduce the soybean transpiration(Tr),which could promote the water use effect(WUE) of the soybean.
Keywords:climate change  [CO2]  summer soybean  photosynthetic pigment contents  photosynthesis
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