Responses of <i>Trifolium repens</i> cv. Rivendel Seeds to Cadmium Stress in Terms of Electrolyte Leakage and Soluble Protein Content Changes

Ecotoxicological responses of cadmium (Cd) on seed germination, electrolyte leakage and soluble protein of Trifolium repens cv. Rivendel seeds were studied. Seeds were exposed to different Cd treatments with concentration of 0-1250 μmol·L -1 for seven days. In the present study, with the increasing Cd concentration, both of germination rate and germination vigor decreased. There was no significant reduce compared to the control under Cd concentration of 10 μmol·L -1 . With the pollution levels strengthen to 1250 μmol·L -1 , germination rate and germination vigor were significantly restrained. With the increasing Cd concentration, electrolyte leakage increased gradually. Electrolyte leakage reached nearly one times of the control under Cd concentration of 1250 μmol·L -1 . Soluble protein content increased under Cd concentration of 10-50 μmol·L -1 and then decreased with Cd concentration increased continuously.