Selection of Salt-tolerant Variants through Culture of Waxy Maize in vitro TRANSFORMATION OF BARELY lea3 GENE INTO ALFALFA (Medicago sativa L.) Cryopreservation of Jiangxi Yanshan Red Bud Taro Embryogenic Calli by Encapsulation-vitrification Introduction of snowdrop lectin gene into maize elite inbred lines via Agrobacterium tumefaciens LONG-TERM CULTURE AND CHROMOSOME VARIATIONS OF EMBRYOGENIC CALLI IN MAIZE An Efficient System of Embryogenic Cell Suspension Cultures and Plant Regeneration in Spathiphyllum cannifolium Resistance of Maize Calli to Herbicide Basta and Its Relevant Effect by Some Amino Acids An Efficient System of Embryogenic Cell Suspension Cultures and Plant Regeneration in Spathiphyllum cannifolium Drought resistance analysis of regenerated plants from calli of Lolium perenne carried by the Shenzhou No.7 spaceship Study on Somatic Embryogenesis and Plant Regeneration of Immature Zygotic Embryo of Cinnamomum camphora