It is an object of the present invention to provide a means of imparting a yellowish flower color to a plant having no or little yellowish flower color or enhancing the yellowish flower color in a plant. In accordance with the present invention, a method of producing a plant having yellowish petals with the use of a peptide having transport activity to chromoplasts in petals and a fused gene formed of a gene encoding such peptide and one, or two or more genes encoding enzyme proteins involved in the carotenoid biosynthetic pathway is provided.