فهرست مطالب مریم جعفر زاده رزمی

One of the most fundamental problems that may affect growth and development of plants and animals are environmental pollution by some heavy metals. Cadmium is a contaminant metal which has harmful effects on the physiological activity of the plant. The aim of this study was to investigate the possibility of using the Nasturtium officinal plants for clarifying of contaminated water and evaluation of this plant ability for phytoremediation.

In this study the effect of different concentrations of Cadmium (including 10, 50, 100, 300 and 500 µM CdCl2) was investigated on physiological parameters and Cadmium absorption of Nasturtium officinal plant. The experiment was carried out in completely randomized design with three replications.

The obtained result showed that the effects of Cd was significant on growth, physiological characters and the amount of Cadmium in plants, so that fresh and dry weight of shoot and root, height of shoot and root and the photosynthetic pigments increased as levels of Cadmium increased in nutrient solution. By increasing Cadmium concentration in medium culture, the amount of Cadmium was enhanced in roots and shoots. The highest Cadmium content in both root and shoot organs was observed in 500µM cadmium treatment.

The current results revealed that Nasturtium officinal plants have certain ability for Cd phytoremediation.