Growth and Physiological Indexes of Cucumber Seedlings with Na2CO3 Stress PHYSIOLOGICAL RESPONSES AND TOLERANCE EVALUATION OF PUMPKIN TO Na_2CO_3 STRESS DURING SEED GERMINATION Early Transcriptomic Adaptation to Na2CO3 Stress Altered the Expression of a Quarter of the Total Genes in the Maize Genome and Exhibited Shared and Distinctive Profiles with NaCl and High pH Stresses Further Study of Physiological Mechanism of the Saline-alkali Tolerance of Puccinellia tenuiflora GST Activity and Its Related Indexes in the Chloroplasts of Puccinellia tenuiflora Seedlings under Na2CO3 Stress Effect of Na2CO3 Stress on Defensive Enzyme System of Puccinellia tenuiflora Seedlings The relationship between light energy utilization and dissipation of PS Ⅱof Puccinellia tenuiflora seedlings and osmotic potential of culture solution under Na2CO3 stress The content of K and Na in epidermis and mesophyll cells of Puccinellia tenuiflora seedling leaves under Na2CO3 stress Effects of Na2CO3 stress on the ultrastructure of mesophyll cells in Puccinellia tenuiflora