Role of Lead on Chlorophylls and Soluble Proteins in Some Cultivars of Triticum aestivum L. under Osmotic Potential

Abstract

The changes of chlorophylls and main metabolites in three cultivars of Triticum aestivum L. under the effects of osmotic and lead stresses, as well as their interaction, were investigated. The results indicated that, the decreased Ys and Pb concentration caused an increase in the chlorophyll content in all plants. Conversely, the chl. a/b ratio was decreased. Apparently, the total soluble proteins were increased in response to low Ys and Pb, except in roots of cv. Giza168 which were increased under high Pb concentrations. Statically, the Ys had the predominant role on chlorophyll content, chl. a/b ratio and total soluble proteins in all investigated plants. The significant correlations between chlorophyll content and soluble proteins were negative.