An Impact Of Microplastic And Microplastic + Lead Induced Toxicity On Growth Parameters And Chlorophyll Content Of Tomato Plant: (Comparison Study)

Abstract

The environmental damage caused by microplastics (MPs) and how it affects plants has become a global concern, but the synergistic effect of microplastic + heavy metal remains scarce. This research aim to gain insight into the comparison study of effect of (PE) microplastic and (PE) microplastic + lead nitrate with different concentration (control, 50mg/L, 100mg/L, 150mg/L, 200mg/L + Control, 0.05mg/L, 0.1mg/L, 0.15mg/L, 0.2mg/L) on the tomato plants: (parameters: growth parameters, fresh weight, dry weight and chlorophyll content). in this study we conclude that as the concentration of microplastic and lead increases the parameters like shoot length, fresh weight, dry weight and chlorophyll content decreases and root length increases. We also found that combined toxicity is more toxic  than the single microplastic toxicity, as the concentration increases from control to 50mg/L in case of single microplastic toxicity the effect is quiet less but in case of combined toxicity there is huge difference in toxicity and at the concentration of 200mg/L + 0.2mg/L+  the germination is around negligible. In combined toxicity root length is also decreases as the shoot length. These findings suggest that bio-accumulation of lead nitrate by polyethylene microplastic is responsible for the suspension in growth parameters and huge effect in physiological parameters like chlorophyll content. As tomato crops are economically important plants, increase in polyethylene microplastic + uptake of lead nitrate in agricultural fields may have a negative influence on this economically important crop production that result into a loss of economy.