Maize is a staple food in many European countries, and it is also used to make corn syrups, corn starch, and corn ethanol, among other things. Our climate has become contaminated as a result of human activities. The majority of heavy metals that affect crop production have been removed from industrial areas. The aim of this research was to look into the accumulation of Mn and Cr in the root, stem, and leaf, as well as the effects of metals on photosynthetic pigments in various maize genotypes, in order to figure out which genotype is best for phytoremediation. For this study, five different maize genotypes (30Y87, 31R88, Neelum, Pak afghoi, and White Corn) were chosen. To access the metal accumulation and photosynthetic parameters, different concentrations (0, 0.25M, and 0.50M) of Cr and Mn in the form MnCl2 and CrCl3 were added independently and in combination. During the study, three replications of each treatment were carried out. The accumulation of Cr and Mn in roots was found to be higher than in stems and leaves, according to the findings. Variety 31R88 accumulated more Cr, while the Neelum variety accumulated very little Cr and Mn. The statistical tools used to compare treatment means were analysis of variance (ANOVA) and Tukey's rang test (p 0.05). The differences between five different genotypes and different treatments for all parameters were substantial, according to ANOVA. Under heavy metal treatments, white corn and the Neelum variety were more tolerant and had higher phosynthetic pigment levels. As a result, both varieties are suitable for phytoremediation. Treatments of 0.25M CrCl3 resulted in high photosynthetic pigments, while treatments of 0.5M MnCl2 + 0.25M CrCl3 and 0.5M MnCl2 + 0.50M CrCl3 resulted in low photosynthetic pigments. The stem had the highest metal accumulation, while the roots had the lowest (stem>leaves>roots). Our research showed that heavy metals had an adverse effect on maize growth, but that maize crop plants could be used to remediate heavy metals from soils. The ability of maize genotypes to accumulate Cr and Mn is also dependent on the genetic behaviour of plant species, according to the findings.
Please see the link :- https://www.ikprress.org/index.php/PCBMB/article/view/5581
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