Effects of Lead, Copper and Cadmium on Bioaccumulation and Translocation Factors and Biosynthesis of Photosynthetic Pigments in Vicia faba L. (Broad Beans) at Different Stages of Growth

Trace elements in the environmental media contribute to toxicities of different types. Their presence arable pedosphere is a human-health risk factor. This study focused on Vicia faba represented by two Tunisian varieties bean (Mamdouh) and (Badii). The objective was analyze effects lead, copper cadmium their growth, chlorophyll-content carotenoids-content, as well bioaccumulation translocation factor, at stages growth. For each metal, concentrations plants were subjected 6, 0.3 0.03 mg/L metal compound for lead nitrate, nitrate acetate, respectively. analysis carried out using an atomic absorption spectrophotometer (ICP-MS), encompassing all parts plant. authors detected perceptible decrease fresh weight roots shoots, drop chlorophyll carotenoid, three heavy metals. Cadmium turned be most toxic metals (which incidentally essential micronutrient plant growth) least. As far factor concerned, exhibited behaviours, both with regard growth absorbed. During vegetative stage, accumulators (a less than unity). However, flowering hyper-accumulator (TF > 1); while accumulated lot pods-stage 1). It worthwhile pose new research questions try answer them this study, if legumes are accumulator or hyper which stage where organ accumulate more HMs.