Application of biotechnology in studies of medicinal plants Dendrobium Sw. Development of Artificial Seed in Ziziphus jujuba CONVERSION OF ENCAPSULATED SHOOT TIPS OF EUCALYPTUS CAMALDULENSIS Research progress of tissue culture and cell engineering in Acanthopanax senticosus Manufacture and influencing factors for artificial seeds of Dendrobium officinale Studies on the Vigor of Carrot Somatic Embryos Enhanced by Desiccation Studies on Somatic Embryogenesis and Desiccation Someatic Embryos in Celery Establishment of the Basic Preparation Process for Artificial Seeds of Carrot