Interaction effects different concentrations of Mn and pH on growth and some physiological and biochemical characters in Brassica oleracea

Manganese as an essential element for plant that ia playing a critical role in many physiological and biochemical processes and in high concentrations is toxic for plants. Plants were cultured in a growth chamber for4 weeks in Hoagland solution and treated with different concentrations of Mn (0 as control, 100,200, 400) μΜ Manganese and pH (5.4, 5.5, 5.6, 5.7). Data analyzed by Spss Ver(14) software and comparison between results were done with Duncan Multiple Range Test. Based on the results, the growth parameters increased with increasing of Mn in cultured media but these parameters severely decreased in highest amount of Mn in Medium.Based on the results, the growth parameters increased with increasing of Mn in cultured media but these parameters severely decreased in highest amount of Mn in Medium.In high concentrations of Mn, chlorophyll a and b contents decreased. Anthocyanin levels with increasing Mn concentration in pH 5.4 in shoots increased. The beta-carotene in the shoots and roots increased with increasing Mn concentration at different pH. Determination of Mn in different tissues showed increasing of accumulation of Mn in treated plants. Spss data analysis software and comparison with Duncan Multiple Range Test was performed in each of the three replicates.