Changes of Photosystem Ⅱ and Respiratory Enzyme Activity in Transgenic Tobacco Enriched BADH Gene Influences of CO2/Salt Shock on Respiratory Enzyme Activities in Wheat Seedling with Different Salt Tolerance Effect of waterlogging on antioxidant and anaerobic respiratory enzymesin Medicago sativa varieties from southern and northern China EFFECTS OF WATER STRESS ON SOME ENZYME ACTIVITIES RELATED TO RESPIRATORY METABOLISM IN LITCHI CHINENSIS LEAVES Protective Effect of Betaine on Respiratory Enzymes Effects of Hypoxia Stress on Anaerobic Respiratory Enzyme and Antioxidant Enzyme Activities in Roots of Cucumber Seedlings ACTIVITIES OF RESPIRATORY ENZYMES AT DIFFERENT DEVELOPMENTAL STAGES OF PANICLES AND ANTHERS IN CMS RICE AND ITS MAINTAINER