![Sample our Environment & Agriculture journals, sign in here to start your access, latest two full volumes FREE to you for 14 days]({"type":"image" , "src" : "/sda/5934/TOC-Subject-Sample-2021-Environment-Agriculture.jpg"})
ABSTRACT
Trace metals present in the environment are hazardous to ecological systems and also to human health and plant growth. In this study, lead and cadmium treatments affected the growth indices of Peltophorum pterocarpum. Lead treatment at 25-100 ppm produced significant (p < 0.05) effects on seedling dry weight of P. pterocarpum as compared with control. Root growth was significantly (p < 0.05) reduced at 50-100 ppm treatment of lead. Increased concentration of lead treatment at 75-100 ppm produced significant (p < 0.05) effects on seed germination and seedling length of P. pterocarpum as compared with control. Cadmium treatment at 50-100 ppm also produced significant (p < 0.05) effects on root growth of P. pterocarpum as compared with control whereas 75-100 ppm produced significant (p < 0.05) effects on seed germination and seedling length. Root growth was affected more than shoot growth at all treatments of cadmium as compared with control. Seedlings of P. pterocarpum were tested for tolerance to lead and cadmium at 25, 50, 75, and 100 ppm concentrations. Seedling of P. pterocarpum showed decreased tolerance with increased concentration of lead. Cadmium treatment at 100 ppm exhibited the lowest tolerance in tree seedlings of P. pterocarpum as compared with lead.
Key Words: