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Pakistan Journal of Biological Sciences
  Year: 2006 | Volume: 9 | Issue: 2 | Page No.: 231-237
DOI: 10.3923/pjbs.2006.231.237
 
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The Effect of Epibrassinosteroid and Different Bands of Ultraviolet Radiation on the Pigments Content in Glycine max L.

Sh. Enteshari, Kh. Kalantari and M. Ghorbanli

Abstract:
The effect of different bands of UV-radiation and epibrassinosteroid treatments on the quantity of chlorophyll a,b, total chlorophyll, anthocyanine, carotenoid, flavonoids and UV absorbing compounds in leaves of the Glycine max were studied. In this study plants were sprayed with epibrassinosteroid and treated with UV-A (2.73 Wm-2), UV-B (1.15 Wm-2) and UV-C (2.66 Wm-2). Studied showed that in those plants which were treated with UV-A, the contents of these pigments were not significantly different when compared with control. While irradiation of the plants with UV-B and UV-C significantly caused decrease in chlorophyll a, b, total chlorophyll and carotenoids. Epibs treatment moderated chlorophyll and carotenoid reduction in those plants that treated with UV-B and UV-C. Decrease in carotenoid were less significant when compared with chlorophyll. The quantity of antocyanines, flavonoids and UV absorbing compounds in plants that treated with UV-B,UV-C and epibs were significantly increased. These pigments have high absorption in UV spectrum of light and therefore could be used as UV-absorbing compounds by plants to prevent penetration of UV to the more sensitive tissues. The role of flavonoids in quenching of Hydrogen peroxide and other species of active oxygen could well describe. The defensive reaction of plants against UVradiation and epibrassinosteroid will discussed in this study.
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How to cite this article:

Sh. Enteshari, Kh. Kalantari and M. Ghorbanli , 2006. The Effect of Epibrassinosteroid and Different Bands of Ultraviolet Radiation on the Pigments Content in Glycine max L.. Pakistan Journal of Biological Sciences, 9: 231-237.

DOI: 10.3923/pjbs.2006.231.237

URL: https://scialert.net/abstract/?doi=pjbs.2006.231.237

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