جستجوی مقالات مرتبط با کلیدواژه « شناساگر » در نشریات گروه « زیست شناسی »

Lead and cadmium are among the most important heavy metals which have entered the life cycle of the earth as a result of human activities.  In this study, in order to evaluate the ability of Indian mustard to uptake heavy metals (cadmium and lead), a survey was performed as randomized complete block design in which each metal was added  to the plant in four concentrations zero (a control), 50, 100 and 200 mg/kg soil. The results showed that the highest concentration of lead in the root and shoot (aerial parts) of Indian mustard was 278.4 and 61.8 mg/kg, respectively, in the 200 mg/kg treatment, while the highest amount of cadmium in these two organs was 14.5, and 10.9 mg/kg respectively in the treatment of 100 mg/kg soil. Also, with the increase of lead concentration in the soil, the amount of this element in Indian mustard increased linearly with a high correlation coefficient, and the bio-concentration coefficient of lead in the plant roots was greater than one in all studied treatments. Finally, it was found that Indian mustard can be used as a bio-indicator of lead and stabilized it in its root, but it is not able to stabilize or extract significant amounts of cadmium from soil.