Simultaneous and discriminative measurement system of photosynthesis and respiration of plant using <SUP>13</SUP>CO<SUB>2</SUB>
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概要
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A measurement system, which measured gross photosynthesis and respiration of the plant discriminately and simultaneously, was developed. The measurement was carried out by controlling <SUP>13</SUP>CO<SUB>2</SUB> and <SUP>12</SUP>CO<SUB>2</SUB> concentration of plant's ambient gas adequately. To formulate the equations of gross photosynthetic CO<SUB>2</SUB> absorption rate (V<SUB>PCO2</SUB>) and respiratory CO<SUB>2</SUB> evolution rate (V<SUB>RCO2</SUB>) two assumptions were made. One is that the evolution of the <SUP>13</SUP>CO<SUB>2</SUB> absorbed by photosynthesis is negligible during the measurement. Another is that <SUP>12</SUP>CO<SUB>2</SUB> and <SUP>13</SUP>CO<SUB>2</SUB> are absorbed at the same rate by photosynthesis. In order to verify the measurement system, V<SUB>PCO2</SUB> and V<SUB>RCO2</SUB> of komatsuna leaf were measured by semi-closed circulation method and open method. In this paper, the formulation method and the measurement system is shown. And it is considered that the application of the measurement method to the material circulation analysis in CELSS.
- 生態工学会の論文
生態工学会 | 論文
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