Photosynthetic responses of soybean (Glycine max) seedlings to shading caused by maize in an intercropping system Effects of High Temperatures on Leaf Structures and Physiological Metabolism of North Highbush Blueberry Leaf Anatomical Structure and Photosynthetic Physiology Responses of Sorbus folgneri Seedlings under Drought Stress Effects of High Temperatures on Leaf Structures and Physiological Metabolism of North Highbush Blueberry