【Objective】The objective of this study was to establish a vacuum infiltration transformation technology system of Agrobacterium in Chrysanthemum morifolium foot buds in open field and provide reference for improving the quality of Chrysanthemum.【Method】Target genes of C. morifolium Flame foot buds were genetically transformed by Agrobacterium infiltration and transformation,and the results of PCR were analyzed. Gus-stained leaves of resistance differentiation seedlings were used to verify transgenic plants,...