Effect of doubled CO2 concentration on photosynthesis characteristics of Lycium barbarum seedling

HOU Jingdong, CAO Bing*,SONG Lihua

JOURNAL OF NANJING FORESTRY UNIVERSITY ›› 2012, Vol. 36 ›› Issue (05) : 71-76.

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JOURNAL OF NANJING FORESTRY UNIVERSITY ›› 2012, Vol. 36 ›› Issue (05) : 71-76. DOI: 10.3969/j.jssn.1000-2006.2012.05.013

Effect of doubled CO2 concentration on photosynthesis characteristics of Lycium barbarum seedling

  • HOU Jingdong, CAO Bing*,SONG Lihua
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Abstract

To study the effects of double CO2 concentration ([CO2]) on photosynthesis characteristics in Lycium barbarum, the seedlings of L. barbarum were exposed to either ambient [CO2] ((350±20) μmol/mol) or elevated [CO2] ((700±20) μmol/mol) in an open top chamber for four months, and the net photosynthesis rate, transpiration rate, stomatal conductance, water utilization efficiency, light response curve, and CO2 response curve of L. barbarum were tested. The result showed that elevating [CO2] could increase the net photosynthesis rate, evaporation rate and stomatal conductance, as well as water utilization efficiency of L. barbarum seedling. With the incubation time extending, the light saturation point decreased, but light compensation point and CO2 saturation point increased.

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HOU Jingdong, CAO Bing*,SONG Lihua. Effect of doubled CO2 concentration on photosynthesis characteristics of Lycium barbarum seedling[J]. JOURNAL OF NANJING FORESTRY UNIVERSITY. 2012, 36(05): 71-76 https://doi.org/10.3969/j.jssn.1000-2006.2012.05.013

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