Title: The Effects of Natural CO<sub>2</sub>Enrichment on the Growth of Maize
Abstract: SUMMARY SUMMARY Maize plants (Zea mays) were grown in a field influenced by a geothermal source of CO2 (CO2 spring Stavešinci, Slovenia). Yield parameters and the content of photosynthetic pigments, mineral nutrients, antioxidants and soluble sugars were measured and the photo-synthetic performance was followed in plants growing at different CO2 conditions. Growth parameters were negatively correlated with the soil CO2 concentration as measured at 20 cm depth. Analysis of A-Ci curves revealed lower maximum photosynthesis (CO2-saturated photosynthesis) and lower carboxylation efficiency in high CO2 plants when compared to low CO2 plants. Several biochemical parameters, as the decrease in chlorophyll content and the increase in antioxidants indicate stress in plants exposed to a high CO2 environment. Key Words: Natural CO2 springs Zea mays photosynthesissoil CO2 pigmentsantioxidants
Publication Year: 2005
Publication Date: 2005-06-06
Language: en
Type: article
Indexed In: ['crossref']
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Cited By Count: 15
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