PHYSIOLOGICAL AND BIOCHEMICAL EFFECTS OF COLD TREATMENT ON Narcissus tazetta L. var. chinensis ROEM AND SHOOTS OCCURRENCE DIFFERENTIATION Responses of Four Different Pennisetum alopecuroides Germplasms to Cadmium Stress A Review on Studies of Antioxidation of Chinese Materia Medica Effects of High Temperature on the Activity and Expression of Antioxidative Enzymes in Rice Flag Leaves during the Flowering Stage