نوع مقاله : پژوهشی
نویسندگان
1 کارشناس ارشد اصلاح نباتات، دانشگاه تحصیلات تکمیلی صنعتی و فناوری پیشرفته کرمان، ایران.
2 دانشیار گروه بیوتکنولوژی، پژوهشگاه علوم و تکنولوژی پیشرفته و علوم محیطی، دانشگاه تحصیلات تکمیلی صنعتی و فناوری پیشرفته، کرمان، ایران.
3 دانشیار دانشکده کشاورزی، دانشگاه شهید باهنر کرمان، کرمان، ایران.
چکیده
کلیدواژهها
عنوان مقاله [English]
نویسندگان [English]
Cadmium is a heavy metal causing oxidative stress in plants. The study objective was to determine phytoremediation potential of black nightshade in cadmium contaminated culture medium. The experiment was carried out under hydroponic conditions with five cadmium chloride concentrations of 0, 100, 200, 400 and 600 mM based on completely randomized design in three replications. Root length, plant height, plant fresh and dry weight, leaf area, cadmium uptake rate and total chlorophyll were recorded. Cadmium application decreased plant dry weight, leaf area and total chlorophyll and increased root length, plant height and cadmium uptake. Cadmium concentrations up to 400 mM caused cadmium uptake increment in plants. Black nightshade kept phytoremediation potential even at 600 mM cadmium concentration. These changes in morph-physiological traits are for cadmium stress management causing survivability of plant against these conditions and black nightshade could be effective in environment hygiene by cadmium accumulation in its tissues. Therefore, black nightshade might be recommended as a cadmium hyper-accumulator plant in industrial cadmium contaminated soils.
کلیدواژهها [English]