Growth Regulation of Lanthanum on the Rhizome of Cymbidium sinense Climate warming brings about extinction tendency in wild population of Cymbidium sinense EFFECTS OF DIFFERENT PHOSPHORUS LEVELS ON GROWTH, DEVELOPMENT AND SOME PHYSIOLOGICAL CHARACTERISTICS IN CYMBIDIUM SINENSE FOLLOWING PHOSPHORUS STARVATION EFFECTS OF MEDIA, GROWTH REGULATORS ANDDIVIDING ON THE GROWTH OF CYMBIDIUM SINENSEPROTOCORMS CULTURED IN VITRO A New Hybrid Cymbidium Cultivar‘Yunülan’ Study on Leaf Anatomy and Photosynthesis of Cymbidium sinense Studies on Infection Processes of Colle totrichum gloeosporioides and Activitiesof Chitinase and β-1, 3-glucanase in Leaves of Cymbidium sinense Changes in Activities of Three Protective Enzymes in Leaves of Cymbidiumsinense after Inoculating Colletotrichum gloeosporioides FEMALE GAMETOPHYTE DEVELOPMENT AND EMBRYOGENY IN CYMBIDIUM SINENSE(ANDR.)WILLD. Changes in Activities of Three Protective Enzymes in Leaves of Cymbidiumsinense after Inoculating Colletotrichum gloeosporioides Induction and Propagation of Hybrid Protocorm Like-body of Crosses betweenCymbidium sinense and Cymbidium hybridium Studies on Infection Processes of Colle totrichum gloeosporioides and Activitiesof Chitinase and β-1, 3-glucanase in Leaves of Cymbidium sinense EFFECTS OF NITRATE-NITROGEN AND AMMONIUM-NITROGEN ON GROWTH AND DEVELOPMENT IN CYMBIDIUM SINENSE Eradication of CymMv from Tissue Cultures of Cymbidium sinense with Chemotherapy A New Hybrid Cymbidium Cultivar‘Yunülan’ Analysis of Isozyme in Varieties and Cultivars of Cymbidium sinense and Cym bidium goeringii Eradication of CymMv from Tissue Cultures of Cymbidium sinense with Chemotherapy Developmental Anatomy of Cymbidium sinense in vitro Effect of Mycorrhizal Infection on Respiration and Activities of Some Oxidase in Rhizome of Cymbidium sinense and C.ensifolium ULTRASTRUCTURE OF CHLOROPLASTS AND PHOTOSYN-THESIS IN DIFFERENT SECTIONS OF YOUNG AND MATURE LEAVES OF CYMBIDIUM SINENSE (ANDR.) WILLD. THE EFFECT OF LANTHANUM ON THE DEVELOPMENT OF SEVERAL ORGANELLS IN THE RHIZOME OF CYMBIDIUM SINENSE INFUENCE OF DIFFERENT POTTASSIVM LEVELS ON CONTENTS OF CARBOHYDRATE PROTEIN IN CYMBIDIUM SINENSE FOLLOWING POTASSIUM STARVATION INFLUENCE OF DIFFERENT POTASSIUM LEVELS ON GROWTH,DEVELOPMENT AND PHYSIOLOGY IN CYMBIDIUM SINENSE FOLLOWING POTASSIUM STARVATI ABSORPTION AND DISTRIBUTION OF PHOSPHORUSIN CYMBIDIUM SINENSE FOLLOWINGPHOSPHORUS STARVATION CHANGE OF WATER PHYSIOLOGY OF CYMBIDIUM SINENSE DURING SOIL DROUGHT PERIOD