Farkhonde Ardalan, Mohammad Vakili, Vahideh Samadiyan-Sarbangholi, Motahare Ardalan
Department of Horticulture Science, Jiroft Branch, Islamic Azad University, Jiroft, Iran
The faculty of Islamic Azad University, Jiroft, Iran
Young Researchers and Elites Club, Tabriz Branch, Islamic Azad University, Tabriz, Iran
Department of Chemistry, Mashhad Branch, Payame Noor University, Mashhad, Iran
Key words: Heavy metals, Hyper-accumulator, Phytoremediation, Cadmium, Rosmarinus officinalis.
To investigate the effect of cadmium and its accumulation rate on growth of Rosmarinus officinalis, this project was performed in Padina Research and Development greenhouse, Mashhad, Iran. Experiment was conducted by using clay pots in completely randomized design with 4 replications and 5 cadmium concentrations (0, 50, 100, 200 and 400 μM). Some traits such as root and stem growth, cadmium accumulation rate in root and shoot, biological and transfer factors were measured. During project period no toxicity symptoms such as necrotic were found in treated plants with cadmium. Analysis of variance indicated that root and stem growth of treated plant significantly decreased. The highest cadmium accumulation rate in root (207 mg/kg) and stem (352.5 mg/kg) belonged to 400 μM. According to the results, biological and transfer factors in all of treated plants were high and reached to 13.3 and 2.27, respectively. Given that a plant is cadmium hyper-accumulator, can save higher than 100mg/kg of it and has higher than 1 of biological and transfer factors. So,Rosmarinus officinalis is introduced as a cadmium hyper-accumulator plant.
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