Details

Autor(en) / Beteiligte

• Vodnik, D
• Sircelj, H
• Kastelec, D
• Macek, I
• Pfanz, H
• Batic, F

Titel

effects of natural CO2 enrichment on the growth of maize

Ist Teil von

• Journal of crop improvement, 2005-01, Vol.13 (1-2), p.193-212

Ort / Verlag

Taylor & Francis Group

Erscheinungsjahr

2005

Quelle

Taylor & Francis Journals Auto-Holdings Collection

Beschreibungen/Notizen

• Maize plants (Zea mays) were grown in a field influenced by a geothermal source of CO 2 (CO 2 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 CO 2 conditions. Growth parameters were negatively correlated with the soil CO 2 concentration as measured at 20 cm depth. Analysis of A-Ci curves revealed lower maximum photosynthesis (CO 2 -saturated photosynthesis) and lower carboxylation efficiency in high CO 2 plants when compared to low CO 2 plants. Several biochemical parameters, as the decrease in chlorophyll content and the increase in antioxidants indicate stress in plants exposed to a high CO 2 environment.