LONG-TERM CULTURE AND CHROMOSOME VARIATIONS OF EMBRYOGENIC CALLI IN MAIZE Optimization of Fermentation Medium Formula and Culture Conditions for the Antagonistic Bacterium HY32 against Colletotrichum gloeosporioides Laccase Activity of Leptographium qinlingensis under Different Culture Conditions Different Culture Conditions on Rapid Propagation of Phellodendron amurense Nutrients and Environmental Factors for the Growth of Nostoc commune Cells Induction of callus and plant regeneration of Zizyphus jujuba Mill. Studies on Culture Conditions of Tricholoma matsutake Effects of Spore Storage Time and Culture Conditions on the Formation of Gametophyte and Sporophyte of Adiantum reniforme var.sinense Artificial Culture of Haploporus odorus The Culture Conditions and Physiological Characteristics of Three Functional Bacteria Used in Turfgrass Cell suspension culture of Dendrobium huoshanenes and its optimal conditions Cell suspension culture of Dendrobium huoshanenes and its optimal conditions RECENT ADVANCES IN THE PRODUCTION OF USEFUL CHEMICAL SUBSTANCES THROUGH PLANT CELL CULTURE The Influence of Different Factors on Cell Growth and α-tocopherol Content of Culture from Carthamus tinctorius