Siddique Anaytullah1, Dubey Anand Prakash
Keywords: Phytotoxicity %, tolerance index %, seed vigour index, proline and SOD.
Cadmium (Cd2+) is a highly toxic biologically non-essential heavy metal which adversely affects the growth, development and yield of plants. Therefore, the study was undertaken to assess the effects of different concentrations of CdCl2 (25, 50, 75 and 100 ppm) on physiological and biochemical changes occur during initial growth phases. The accumulation of heavy metal cadmium (Cd2+) in roots of wheat seedling, level of toxicity and their effect on wheat seedling was measured by measuring/estimating the % inhibition of germination, length of root, shoot (cm), root/shoot ratio, seed vigour index (SVI), phytotoxicity (%), tolerance index (T. I. %), relative water content (RWC%) chlorophyll content (mg g−1), proline content (μg g−1) and superoxide dismutase (SOD, unit×102 g−1 f. wt. min−1). As the externally imposed elevated levels of CdCl2 increased towards 25 to 100 ppm the cadmium (Cd2+) concentration increased in roots in the same proportion. The effect of (Cd2+) uptake by root was appeared on reduction of % inhibition of germination, length of root, shoot (cm), root/shoot ratio, T.I.(%), RWC(%), and Chlorophyll content (mg g−1). While the phytotoxicity (%), proline content (μg g−1) and superoxide dismutase (SOD, unit×102 g−1 f. wt. min−1) were found to be increased in wheat seedling at 240 hours of old wheat seedling in comparison to control (Without treated set).
*Corresponding author: Department of Agronomy, School of Agriculture, Lovely Professional University, Jalandhar, 144411, Punjab, India Email firstname.lastname@example.org