UDC 633.16:581.1:57.043
EFFECT OF LOW DOSES OF UV-B RADIATION ON BIOCHEMICAL INDICES AND GROWTH IN BARLEY PLANTS
K.V. Manin, L.I. Goncharova
In microfield experiment the authors investigated the effect of low doses of UV-B radiation (0.9, 1.77, 2.75 kJ/m2) on biochemical and morphophysiological indices in barley plants. Under the radiation action the content of photosynthetic pigments, flavonoids and free proline in leaves is in-creasing, height of stem is raising. The amount of glutathione is reducing, but the amount of ascorbic acid remains constant. During the exposure to radiation in dose of 2.75 kJ/m2 the concentration of malonic dialdehyde is decreasing, but the plant biomass is increasing.
Keywords: low dozes UV-B radiation, photosynthetic pigments, chlorophylls, carotenoids, malondialdehyde (MDA), antioxidative system, free proline, flavonoids, ascorbate and glutathione.
ГНУ Всероссийский НИИ сельскохозяйственной
радиологии и агроэкологии Россельхозакадемии, |
Received June 17, 2009 |