The Photosynthetic Characters of Alocasia odora C. Koch. and Camelliajaponica L. in Greenhouse in Summer Establishment of an efficient regeneration system of Jijing88 Induction and Differentiation of Four Eucalyptus Clones in vitro Culture Analysis of Factors Influencing Regeneration Rate of Embryogenic Callus from Immature Embryo of Maize Effects of Plant Growth Regulators on Induction of Multiple Shoots From Stem Apex of Immature Embryo in Wheat Embroyogen ic Ca llus Induction and Plant Regenera tion ofClones GL9 of Euca lyptus grandis ×E. u rophylla The Photosynthetic Characters of Alocasia odora C. Koch. and Camelliajaponica L. in Greenhouse in Summer