Cadmium uptake and accumulation ability of Rosmarinus officinalis and its growth changes
Paper Details
Cadmium uptake and accumulation ability of Rosmarinus officinalis and its growth changes
Abstract
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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