Responses of primary root and antioxidase system to exogenous Ca2+ in pea under H2O2 stress Effects of Seed-soaking with Exogenous Ca2+ on Seed Germination and Seedling Growth and Biochemical Characteristics of Trifolium pratense under Cd2+ Stress Effects of exogenous Ca2+ on the seed germination of Koelreuteria paniculata in limestone area of Southwest China under drought stress. Responses of Growth and Physiology of Calcicoles and Calcifuges to Exogenous Ca2+ Ameliorative effect of exogenous Ca2+and GA3 on Peganum harmala alkaloid inhibition in germinating cucumber seeds The Physiological and Biochemical Responses of Jat ropha curcas L. Under Sr2+ Stress With Exogenous Ca2+