Effects of KCl on Active Oxygen Metabolism and Osmotica Accumulation in Avena nude L. Seedlings under NaCl Stress Effects of Magnesium Deficiency on Growth and Active Oxygen Scav􀀁enging System in Cucumber under Different Light Intensities Effect of AsA-GSH Cycle on Hg2+-Tolerance in Rice Mutant Effect of osmotic stress on wheat membrane injury under different CO2 concentrations Photosynthetic characteristics and protective enzyme activities of different low k-tolerance soybean varieties under low potassium stress Effects of Magnesium Deficiency on Growth and Active Oxygen Scav􀀁enging System in Cucumber under Different Light Intensities Effects of elevated O3 concentration and UV-B radiation on the chlorophyll content and active oxygen metabolism of soybean leaves. Identification and Gene Fine Mapping of an Early Senescent Leaf Mutant esl5 in Oryza sativa