Variety traits

Dahlia Inflorescence

Dahlia Cav.

The dahlia inflorescence is a capitulum composed of ray and disc florets. This trait is key in breeding and cultivar testing, classified by the degree of doubling, structure, and size, which ranges from 2.5 to 40 cm.

In the reference 246 varieties crop Dahlia, where this is mentioned in the description.

The dahlia inflorescence is a complex structure consisting of peripheral ray florets and central disc florets. During professional cultivar testing, the diameter of the inflorescence and its classification are evaluated, determined by the shape of the ray florets and the degree of central filling. The presence of an open disc with tubular florets is a dominant trait, while full doubling is recessive.

Agronomic characteristics of the inflorescence include peduncle strength, which ensures the support of the flower head's weight, and the cultivar's ability to maintain its shape after cutting. Seed productivity is limited in highly double forms due to the reduction of disc florets. With prolonged vegetative propagation by tubers, there is a risk of cultivar degeneration, accompanied by a reduction in inflorescence size and loss of the characteristic configuration.