biologia plantarum

International journal on Plant Life established by Bohumil Němec in 1959

Biologia plantarum 51:559-562, 2007 | DOI: 10.1007/s10535-007-0122-9

Photosynthesis and nutrient composition of spinach and fenugreek grown under elevated carbon dioxide concentration

V. Jain1,*, M. Pal1, A. Raj1, S. Khetarpal1
1 Indian Agricultural Research Institute, Division of Plant Physiology, New Delhi, India

The effect of elevated carbon dioxide concentration on the changes in the biomass, photosynthesis and nutrient composition was investigated in two leafy vegetables. Spinach (Spinacia oleracea L.) and fenugreek (Trigonella foenum-graecum L.) plants were grown in open top chambers under either ambient (ACO2, 350 ± 50 µmol mol-1) or elevated (ECO2, 600 ± 50 µmol mol-1) CO2 concentration and analyzed 40, 60 and 80 days after exposure. The plants grown in ECO2 had higher net photosynthetic rate and lower stomatal conductance when compared with the plants grown in ACO2. ECO2 also changed the nutrient composition: a lower N, Mg and Fe contents and higher C and Ca contents were observed in the leaves of plants exposed to ECO2 than in those grown at ACO2.

Keywords: calcium; iron; magnesium; net photosynthetic rate; nitrate reductase; stomatal conductance
Subjects: calcium; CO2 concentration, internal; fenugreek; gas exchange; iron; magnesium; metals; nitrate reductase; open top chamber; spinach; Spinacia oleracea; stomatal conductance; Trigonella foenum-graecum

Received: December 19, 2006; Accepted: July 25, 2006; Published: September 1, 2007  Show citation

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Jain, V., Pal, M., Raj, A., & Khetarpal, S. (2007). Photosynthesis and nutrient composition of spinach and fenugreek grown under elevated carbon dioxide concentration. Biologia plantarum, 51(3), 559-562. doi: 10.1007/s10535-007-0122-9
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