Heavy metal toxicity has an impact on plant growth, human and animal health, microbial activity, and other factors. Heavy metals have had a negative impact on plant metabolism and physiological activities. Because heavy metals cannot be destroyed or degraded, they accumulate in plants and cause toxic effects when their concentrations are exceeded. The purpose of this study was to see how heavy metal toxicity affected Zea mays growth and associated characteristics. During the study, five different Zea mays seed varieties (30Y87, 31R88, Neelum, Pak Afghoi, and White Corn) were used. Cr and Mn were prepared in various concentrations (0, 0.25 M, and 0.50 M). With an 8-day interval between treatments, all varieties were treated with Cr and Mn independently and in combination. During the study, three replications of each treatment were carried out. Different morphological traits in roots, stems, and leaves were documented. Statistical tools such as stepwise linear regression and person's correlation were used to compare treatment means. Dry leaf weight with dry stem weight, root diameter with leaf area, dry root weight with dry stem weight, stem diameter with plant height, dry stem weight with fresh stem weight, fresh leaf weight with fresh root weight, fresh stem weight with plant height, and leaf area with plant height all had greater and important correlations. According to regression analysis, dry leaf weight has a large and positive contribution to plant height. Plant height had the accumulative medium coefficient of determination (51.77 percent) or R2, while fresh leaf weight had the high coefficient of determination (R2) (96.29 percent ).
Please see the link :- https://www.ikprress.org/index.php/PCBMB/article/view/5552
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