 ISSN 0235-7224 ISSN 2029-0586 (online) |
2008 m. Nr. 4 Changes in the sensitivity of agricultural plants to the impact of ozone and UV-B radiation in simulated warmer climate conditions
The sensitivity of agricultural crops and weed to the impact of ozone and UV-B radiation was evaluated according to changes in their dry biomass and concentration of photosynthetic pigments. Pisum sativum L., Raphanus sativus L. and Phleum pretense L. were most sensitive to the impact of ozone in current climatic conditions (350 ppm of CO2 and 21 °C day/14 °C night temperatures). The sensitivity of all test crops to the impact of ozone decreased significantly under warmer climatic conditions – 700 ppm of CO2 and 25 °C day/19 °C night temperatures. Pisum sativum L. and Chenopodium album L. appeared to be most sensitive to the impact of UV-B radiation under current climatic conditions. Changes in the sensitivity of plants to the impact of UV-B radiation under warmer climatic conditions were not as pronounced as those for ozone, and were highly species-dependent. Sensitivity to the impact of UV-B radiation under warmer climatic conditions decreased for Lycopersicon esculentum Mill. and Chenopodium album L. and increased for Raphanus sativus L. and Phleum pretense L. Keywords: climate warming, carbon dioxide, tropospheric ozone, UV-B radiation, plant sensitivity |
Issues:
2011 - Vol.57 No. 1, No. 2 2010 - Vol.56 No. 1-2, No. 3-4 2009 - Vol.55 No. 1, No. 2, No. 3-4 2008 - Vol.54 No. 1, No. 2, No. 3, No. 4 2007 - Vol.53 No. 1, No. 2, No. 2.priedas, No. 3, No. 4 2006 No. 1, No. 2, No. 3, No. 4 2005 No. 1, No. 2, No. 3, No. 4 2004 No. 1, No. 2, No. 3, No. 4 2003 No. 1, No. 2, No. 3, No. 4 2002 No. 1, No. 2, No. 3, No. 4 2001 No. 1, No. 2, No. 3, No. 4 |