It discloses: a kind of derivative flavanone 3-hydroxylase (F3H) gene of chrysanthemum producing plant with swallow grass element containing Chrysanthemum Petal using transcriptional regulatory district With chrysanthemum plant, the growth of offspring or proliferation product plant or part of it or a set of plant, the plant or the offspring are proliferated the plant of product, especially petal or a cut flower. Include the petal with the plain chrythanthemum of swallow grass, flavonoids 3 in manufacturing method ", 5 hydroxylases (F3 5H) are caused to express derivative flavanone 3-hydroxylase (F3H) gene of chrysanthemum in chrysanthemum production using transcriptional regulatory district
