Propagation with Etiolated Softwood Cuttings of Five Dwarf Cultivars ofChinese Tree Peony Comparison of Photosynthetic Characteristics between Potted and Field Paeonia suffruticosa Andr. ISSR analysis on genetic diversity of Paeonia suffruticosa in Hunan province Efficient Induction of Callus and Plant Regeneration From Paeonia suffruticosa Andr Ultrastructural studies of microsporogenesis and development of male gametophyte in Paeonia suffruticosa Assessment of Genetic Diversity and Relationship of 89 Tree Peony Cultivars from Different Provenances Assessment of Genetic Diversity and Relationship of 89 Tree Peony Cultivars from Different Provenances Studies on chemical constituents in root back of Paeonia suffruticosa Propagation with Etiolated Softwood Cuttings of Five Dwarf Cultivars ofChinese Tree Peony Comparison of Photosynthetic Characteristics between Potted and Field Paeonia suffruticosa Andr. Effect of STS on biological and physiological changes of the tree peony STUDIES ON THE INVESTIGATION AND INTRODUCTION OF THE WILD FLOWER PAEONIA SUFFRUTICOSA ANDR.VAR.PAPAVERACEA (ANDR.) KERNER IN SHENNONGJIA