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Effect of low doses of UV-A and UV-B radiation on photosynthetic activities inPhaseolus mungo L.

한국식물학회지 2004년 47권 2호 p.105 ~ 110
 ( Jayakumar Muthukrishnan ) - Madurai Kamaraj University School of Biological Sciences

 ( Amudha Paulraj ) - Madurai Kamaraj University School of Biological Sciences
 ( Kulandaivelu Govindaswamy ) - Madurai Kamaraj University School of Biological Sciences

Abstract


The effect of low doses of UV-A (320?400 nm) and UV-B (280?320 nm) radiation on photosynthetic activities inPhaseolus mungo L. was investigated under field condition. Supplementation of UV-A enhanced the synthesis of chlorophyll and carotenoids than the UV-B supplemented plants. Significant increase was seen in the concentration of UV-B absorbing compounds of UV-B treated plants. Increase of PS 2 activity in UV-A treated plants was seen. Changes in photosynthetic activity were measured in terms of PS 2 mediated O2 evolution and Chl a fluorescence.

키워드

chlorophyll; fluorescence induction; Phaseolus mungo; ozone depletion; UV-A radiation; UV-B radiation
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