Relationship Between the Types of Flower-bud D ifferentiationand Forcing Successive Secondary Flowering of Tree Peonies Relationship Between the Types of Flower-bud D ifferentiationand Forcing Successive Secondary Flowering of Tree Peonies Flower Formation and Endogenous Hormones Dynamic in Chinese Jujube Flower Formation and Endogenous Hormones Dynamic in Chinese Jujube Relationship between External Morphology and Anatomical Structure of Precocious Walnut during Pistillate Flower-bud Differentiation The Effect of Different Temperature Treatments on Dynamic Changes of Endogenous Hormones and Flower-bud Differentiation of ‘Green World‘ Cattleya