Isolation and Expression Analysis of MdAPETALA2 Gene from Fuji Apple Isolation and Expression of PsAP 2 Gene in Tree Peony Cloning and Expression Analysis of APETALA2 Homologous Genes in Strawberry Cloning and Transformation of apetala2 Homologues Genes from Apple Evolution and protein interactions of AP2 proteins in Brassicaceae: Evidence linking development and environmental responses Isolation and Functional Characterization of APETALA2-Like Gene from Larix Cloning and Transformation of apetala2 Homologues Genes from Apple