Variety traits
Hydrangea L.
Double flowering in hydrangea is a genetically determined varietal trait of sterile flower structure, possessing high ornamental and commercial value.
In the reference 8 varieties crop Hydrangea, where this is mentioned in the description.
The double flowering trait is formed due to the specific structure of sterile flowers and is evaluated within the framework of international DUS tests. In professional breeding, this indicator is recorded as a qualitative trait describing the presence of the characteristic and the degree of sepal expression, and it is accounted for in comprehensive plant ornamental scales.
Genetic studies show that this trait in Hydrangea macrophylla and H. serrata is inherited as a recessive one and is controlled by a major gene localized on the 17th chromosome in Hydrangea macrophylla. The presence of this gene allows for the application of marker-assisted selection methods to obtain new varieties.
In the agronomic context of hydrangeas, double flowering is exclusively a varietal characteristic with no connection to pathologies or viral diseases. During visual assessment of plantings, it is important to distinguish this decorative effect from signs of plant disease damage.
General information about the subject — on the page Double flowering / Reversion.
Selection based on the description text, not on official evaluation: these data are absent from registers. For specific variety details, please refer to its profile.
Hydrangea L. · Hydrangea
Information regarding the breeder received in the contribution to CPVO :Tsunetani
Hydrangea L. · Hydrangea
No information of breeder available for this variety
Hydrangea L. · Hydrangea
Information regarding the breeder received in the contribution to CPVO :Maximowicz
Hydrangea L. · Hydrangea
Information regarding the breeder received in the contribution to CPVO :Tuyama
Hydrangea L. · Hydrangea
Hydrangea L. · Hydrangea
No information of breeder available for this variety
Hydrangea L. · Hydrangea
No information of breeder available for this variety
Hydrangea L. · Hydrangea
Information regarding the breeder received in the contribution to CPVO :Tuyama