Photosynthetic characteristics of five rice cultivars grown under increased solar UV-B radiation |
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| Authors: | A. Premkumar G. Kulandaivelu |
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| Affiliation: | (1) School of Biological Sciences, Madurai Kamaraj University, Madurai, 625 021, India |
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| Abstract: | The impact of increased solar UV-B radiation on photosynthetic characteristics of rice (Oryza sativa L.) cultivars ADT36, IR20, IR50, J13 and MDU4 has been studied. In all the cultivars concentrations of photosynthetic pigments decreased under increased UV-B radiation. Even low enhancement of UV-B reduced the photochemical activities in all the cultivars except MDU4 and changed chlorophyll a fluorescence. Enhanced UV-B radiation caused a dose-dependent changes in chloroplast proteins in most of the cultivars. This revised version was published online in July 2006 with corrections to the Cover Date. |
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| Keywords: | carotenoids chlorophyll a+b chlorophyll a fluorescence Oryza sativa photochemical activities photosystem 1 photosystem 2 |
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