نوع مقاله : مقاله پژوهشی
1 دانشگاه جیرفت - دانشکده منابع طبیعی - استادیار گروه محیط زیست
2 دانشیار گروه علوم خاک، دانشکده کشاورزی، دانشگاه شهید باهنر کرمان
3 استادیار گروه محیط زیست، دانشکده کشاورزی و منابع طبیعی، دانشگاه آزاد اسلامی یزد
عنوان مقاله [English]
Unprincipled use of industrial wastewater, use of chemical fertilizers & the use of sewage sludge agricultural areas has caused to environmental pollutions with different types of heavy metals. This research was conducted to evaluate copper stress resistance for Pharagmites australis. Experimental design was performed in completely r&omized design with two factors & three replications. Heavy metal stress resistant of P.australis during seedling establishment to maturity stages was investigated under greenhouse condition. The metals concentrations were measured in shoot, root & soil of experiments. Greenhouse experiments results showed that with increasing in metals concentration treatments, it’s absorbing with shoot & root were increased. However, impressive accumulation of heavy metals was in root & its translocation & accumulation in shoot has been reported much less. With absorb & accumulate of metals in root, ability of plant growth was decreased with changes in physiological characteristics. Results of regression analysis showed concentration increasing of metals in P.australis organs under these metal stress condition were fitted as a quadratic function with R2 >90 (p<0.01). Results of this research show high relatively resistant of P.australis to heavy metals stress, high accumulation capacity for metals in its root organ & low heavy metal translocation factor.