Observation on the Morphology of Leaf Blade Cells in Oats under Different Sowing-date Conditions Effect of copper stress on ultra-structure of mesophyll cells in Chinese cabbage Preliminary Observation on the Cell Morphology of Leaf Blades and Other Vegetative Organs in Sorghum Effect of NaCl Stress on Ultrastructure of Halophytes Artemisia anethifolia Effect of Salt Stress on the Ultrastructure of Cells Membrane System in Maize Ultrastructural responses of Syntrichia caninervis to a gradient of NaCl stress STUDIES ON THE POISONING SYMPTOMS AND THE MORPHOLOGICAL CHANGES OF THE LEAVES BLADE OF B.SCHREBERI INDUCED BY THE STRESS OF THE POLLUTION OF Cd~( 2+) Studies on the Relationship between the Successive Release of Winter Varieties in Xinjiang Province and the Evolution of the Mesophyll Cells in the Flag Leaves of Wheat 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 Degradation of Storage Photosynthates in Isolated Spinach Mesophyll Cells in CO2-Free System and Its Regulatory Factors