Lead phytoremediation of Rosmarinus officinalis and its effect on the plant growth

2014 International Journal of Biosciences  
This project was conducted to evaluate lead absorption, accumulation rate and the effect of this metal on growth of Rosmarinus officinalis in Padina Research and Development greenhouse, Mashhad, Iran. The pot experiment was conducted in completely randomized design with 4 replications and 5 lead concentrations (0, 200, 400, 800 and 1000 µM). Root growth, stem growth, lead accumulation rate in root, lead accumulation rate in shoot, biological and transfer factors were measured. Analysis of
more » ... . Analysis of variance indicated that root and stem growth decreased in treated plants with lead compared to control. No symptoms of lead poisoning were observed in plants. Lead accumulation rate were increased in root and stem with 953.5mg/kg and 1507.50mg/kg, respectively. According to the results, lead transfer and biological factors were higher than 1 in all treatments and were reached to 1.81 and 23, respectively. Considering that a plant is lead hyper-accumulator, can save higher than 1000mg/kg of it and has higher than 1 of biological and transfer factors. So this plant is considered as a hyper-accumulator plant.
doi:10.12692/ijb/4.5.75-79 fatcat:4f66bglmtfcwtgiy5fzav6slgm