EFFECT OF MANGANESE AND CHROMIUM TOXICITY ON GROWTH AND PHOTOSYNTHETIC PIGMENTS OF MAIZE | PLANT..

The majority of the wastes come from industry, and they comprise heavy metals, organic, and nonmetallic ions. Because of anthropogenic activities, soil contamination has become a coMon concern. In regions where anthropogenic pressure is high, heavy metals such as lead, chromium, manganese, and cadmium are coMon environmental contaminants. Heavy metal accumulation in agricultural settings has an impact on crop growth and soil organism activity. Heavy metals have an impact on plant metabolism and are distributed by contamination of the air, water, and soil. The primary goal of this research is to determine the effects of Mn and Cr toxicity on growth-related variables in maize genotype white corn, as well as to determine whether one maize genotype is more resistant to metal stress than another. During the suMer season, the study was conducted in the physiology lab at IMBB, University of Lahore. Mn and Cr (0, 0.25M, 0.50M) were applied alone and in combination to white corn, and data was collected at various growth phases. For all parameters except fresh stem weight and fresh root weight, analysis of variance revealed a significant difference between 9 different treatments, and tukey's test revealed that treatment 0.5M MnCl2+0.5M CrCl3 had a high toxic effect, while treatment 0.25M MnCl2 + 0.5M CrCl3 had a lower toxic effect. However, when it came to photosynthetic pigments, treatments 0.5M CrCl3 and 0.25M MnCl2+0.25M CrCl3 were the most affected, while treatments 0.25M MnCl2 and 0.25M CrCl3 were the least affected. As a result of its resistance to Cr and Mn stress, maize genotype may be used for phytoremediation in the future.

Please see the link :- https://www.ikprress.org/index.php/PCBMB/article/view/5835