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CO2浓度倍增对宁夏枸杞光合特性的影响(PDF)

《南京林业大学学报(自然科学版)》[ISSN:1000-2006/CN:32-1161/S]

Issue:
2012年05期
Page:
71-76
Column:
研究论文
publishdate:
2012-09-30

Article Info:/Info

Title:
Effect of doubled CO2 concentration on photosynthesis characteristics of Lycium barbarum seedling
Author(s):
HOU Jingdong CAO Bing*SONG Lihua
School of Agriculture, Ningxia University, Yinchuan 750021,China
Keywords:
Lycium barbarum L.net photosynthesis rate water utilization efficiency light saturation point CO2 saturation point
Classification number :
S727.34;S718.43
DOI:
10.3969/j.jssn.1000-2006.2012.05.013
Document Code:
A
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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Last Update: 2012-09-30