Abstract
This study was conducted to determine the effects of different lead (0, 1000, 1500 and 2000 mg/kg) levels on physiological and morphological responses of bean plants in 2019 in Atatürk University, Faculty of Agriculture, Department of Horticulture under laboratory and greenhouse conditions. Bean (Phaseolus vulgaris L.) Gina cultivar was used as plant material in the experiment. According to study findings, it was determined that differences between treatments were statistically important. The bean plants grown under heavy metal stress conditions were affected regarding to plant growth parameters (fresh and dry weight ect.), some plant physiological parameters such as tissue electrical conductivity (TEC), tissue rational water content (TRWC). Lead stress conditions negatively affected plant growth. Plants grown under heavy metal stress had more TEC and less TRWC values compared to the control plants. Heavy metal stress caused the decreased chlorophyll a, chlorophyll b and caretenoid content in bean plants. In conclusion, bean plants responded to lead stress by reducing growth, TRWC and pigment concentration, increasing TEC.
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