A gene, a virus plasmid, a method, and a module for controlling the flower color formation in orchids, and Phalaenopsis orchids manufactured by the same are disclosed. In the present invention, the method for controlling the flower color formation in orchid comprises the following steps: (A) providing an infection solution containing an infection bacteria, wherein the infection bacteria comprises a virus plasmid, and the virus plasmid comprises a vector, a virus gene, and a PeUFGT3 gene and (B) transferring the infection solution into vascular bundles of the orchid, and delivering the infection solution to a floral organ through the vascular bundles to adjust the flower color.本發明係有關於一種調控蘭花花色之基因、病毒質體、方法及套組、及使用其所製造之蝴蝶蘭,其中,調控蘭花花色之方法係包括下列步驟:(A)提供一含有感染病菌之感染溶液,其中該感染病菌係含有一病毒質體,且病毒質體係包含一載體、一病毒感染基因、以及一PeUFGT3基因;以及(B)將感染溶液傳送於蘭花之維管束組織中,使感染溶液可經由維管束組織運送至花器,以調控蘭花花色。
