What is the symptom of zinc deficiency in flowers?

The new leaves in the upper part of the plant lose green and yellowing, the internodes of the new shoots are shortened, the leaflets are dense, and the branchlets form clusters; or the new leaves in the upper part are yellowed and smaller, yellow-brown patches appear between veins and leaf tips, internodes are shortened, leaves are clustered and fine; old leaves are easy to roll outward, stems and leaves harden, flower buds are difficult to form, and so on.