Impact of lead on the amount of chlorophyll and carotenoids in the leaves of Triticum durum and T. aestivum, Hordeum vulgare and Avena sativa

Lead is one of the most dangerous pollutants to both environment and humans. It causes structural changes in photosynthetic apparatus reduced biosynthesis chlorophyll pigments inhibits carbon metabolism. The aim our study was determine dynamics leaves wheat (Triticum durum T. aestivum), barley (Hordeum vulgare) oats (Avena sativa) at different lead acetate, Pb(CH3COO)2 levels: 0, 0.15, 0.30 0.60 g/L. results this research indicate that these concentrations significantly affected content H. vulgare A. sativa as compared aestivum. Analysis variance showed concentration interaction between cereal species had a significant effect on all characteristics 0.1% probability carotenoids contents 1% significance. acetate 0.3 0.6 g/L highly a, b seedlings, its carotenoid increased from 0.002 mg/g FW 0 0.107 g/L, whereas decreased under heavy metal stress, corresponding ion. Carotenoids were not Chl b, while higher seedlings 1.384 total 1.883 amount indicative formation free radicals plants levels an indication reduction growth leading decrease yield. suggested can be adopted very useful vivo indicator toxicity.