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  • 1 Deemed University Department of Botany, Allahabad Agriculture Institute Allahabad 211007 India
  • | 2 Indian Agricultural Research Institute CCUBGA New Delhi 110012 India
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Effect of ultravilolet-B (0.4 Wm −2 ) irradiation on growth, flavonoid content, lipid peroxidation, proline accumulation and activities of superoxide dismutase and peroxidase was comparatively analysed in Azolla pinnata and Azolla filiculoides . Growth measured as increment in dry weight reduced considerably due to all UV-B treatments. However, the reduction was found to be severe in A. filiculoides as compared to A. pinnata . The level of UV-absorbing compound flavonoids increased significantly in A. pinnata plants whereas only a slight increase in the flavonoid content was observed in A. filiculoides . UV-B exposure led to enhanced production of malondialdehyde (MDA) and electrolyte leakage in A. filiculoides than A. pinnata . Proline accumulation also showed a similar trend. Marked differences in the activity of antioxidant enzymes such as superoxide dismutase (SOD) and peroxidase (POD) was noticed in both the plants exposed to UV-B. Our comparative studies indicate A. pinnata to be better tolerant to UV-B as compared with A. filiculoides which appears to be sensitive.

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Editorial Board

      Csányi, Vilmos (Göd)
      Dudits, Dénes (Szeged)
      Falus, András (Budapest)
      Fischer, Ernő (Pécs)
      Gábriel, Róbert (Pécs)
      Gulya, Károly (Szeged)
      Gulyás, Balázs (Stockholm)
      Hajós, Ferenc (Budapest)
      Hámori, József (Budapest)
      Heszky, László (Gödöllő)
      Hideg, Éva (Szeged)
      E. Ito (Sanuki)
      Janda, Tibor (Martonvásár)
      Kavanaugh, Michael P. (Missoula)
      Kása, Péter (Szeged)
      Klein, Éva (Stockholm)
      Kovács, János (Budapest)
      Brigitte Mauch-Mani (Neuchâtel)
      Nässel, Dick R. (Stockholm)
      Nemcsók, János (Szeged)
      Péczely, Péter (Gödöllő)
      Roberts, D. F. (Newcastle-upon-Tyne)
      Sakharov, Dimitri A. (Moscow)
      Singh, Meharvan (Fort Worth)
      Sipiczky, Mátyás (Debrecen)
      Szeberényi, József (Pécs)
      Székely, György (Debrecen)
      Tari, Irma (Szeged)
      Vágvölgyi, Csaba (Szeged),
      L. Zaborszky (Newark)

 

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Acta Biologica Hungarica
Language English
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1950
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