biologia plantarum

International journal on Plant Life established by Bohumil Němec in 1959

Biologia plantarum 46:625-628, 2003 | DOI: 10.1023/B:BIOP.0000041076.95209.c3

Effects of Enhanced UV-B Radiation and Tropospheric Ozone on Physiological and Biochemical Characteristics of Field Grown Wheat

N.K. Ambasht1, M. Agrawal1
1 Ecology Research Laboratory, Department of Botany, Banaras Hindu University, Varanasi-, India

Experiments were conducted under field conditions to assess the growth, physiological and biochemical responses of wheat plants (Triticum aestivum L.) to supplemental UV-B radiation (7.1 kJ m-2) and enhanced ozone (0.07 μmol mol-1) separately and in combination. Enhanced UV-B radiation and O3 reduced biomass, yield, photosynthetic rate, chlorophyll, carotenoid and ascorbic acid contents and catalase activity, whereas increased total phenol content and peroxidase activity. Contents of flavonoids increased due to UV-B treatment. The interactive effects were, however, less than additive.

Keywords: carotenoids; catalase; chlorophyll; peroxidase; phenol content; photosynthetic rate; stomatal conductance; Triticum aestivum
Subjects: ascorbate, ascorbic acid; carotenoids, gas exchange, UV-B; catalase; chlorophyll, gas exchange, UV-B; gas exchange, UV-B; ozone, tropospheric, UV-B, gas exchange; peroxidases; radiation, ultraviolet-B, tropospheric ozone; stomatal conductance, UV-B; Triticum aestivum

Published: December 1, 2003  Show citation

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Ambasht, N.K., & Agrawal, M. (2003). Effects of Enhanced UV-B Radiation and Tropospheric Ozone on Physiological and Biochemical Characteristics of Field Grown Wheat. Biologia plantarum, 46(4), 625-628. doi: 10.1023/B:BIOP.0000041076.95209.c3
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