PJB-2017-320
Effect of copper on physiological and biochemical peculiarities of wheat (Triticum aestivum L.) varieties
Saule Atabayeva, Akmaral Nurmahanova, Saltanat Asrandina, Ravilya Alybayeva, Alya Meldebekova and Nurzhaniyat Ablaikhanova
Abstract
The effect of different concentrations (0.25mM, 0.5mM) of Cu2+ on growth parameters were investigated in hydroponically grown five wheat (Triticum aestivum L.) varieties (Kazakhstanskaya rannaya, Kazakhstanskaya-3, Melturn, Kaiyr and Shagala). Sensitive and tolerant wheat varieties were taken for other physiological and biochemical analysis: RWC, proline and malondialdehyde (MDA) content, photosynthetic pigments and peroxydase and superoxide dismutase activity. Wheat varieties exposed to 0.5mM Cu2+ exhibited significant growth reduction. The results showed that growth, physiological and biochemical parameters were significantly reduced at 0.5 mM Cu2+ compared to untreated control plants. Wheat varieties tolerant and sensitive to Cu2+ were identified. MDA content in tolerant variety was less as compared to varieties sensitive to copper. In tolerant variety photosynthetic pigments (chlorophyll-a, chlorophyll-b, carotenoids) content was decreased to a less extent compared to sensitive varieties. The highest SOD and POD activity was observed at 0.5mM of copper
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