The effects of adding different concentrations (80, 120, 160, 200 mg·L^-1) of Ca(NO₃)₂ on eggplant resistance to
Verticillium wilt, eggplant seedling growth and resistance physiology indexes were studied by inoculating eggplant seedlings with
V. dahliae. The results showed that, after adding the different concentrations of Ca(NO₃)₂, the disease incidence and disease index of eggplant V. wilt were both decreased, the growth of eggplant seedlings was promoted, and the related physiological indexes of resistance were increased. The 160 mg·L^-1 of Ca(NO₃)₂ had the best effect among all the treatments. Compared with the control (adding water), the plant height, stem diameter, ground fresh weight, and underground fresh weight after the different additions of Ca(NO₃)₂ increased by 32%, 22%, 93% and 114%, respectively; the chlorophyll content and root vigor increased by 35% and 63%, respectively; the relative electricity conductivity and MDA decreased by 51% and 54%, respectively; the activities of defensive enzymes (PAL, PPO, POD) increased by 60%, 721% and 144%, respectively.