Variety traits

Dahlia flower color

Dahlia Cav.

A key visual trait in dahlia variety testing, characterized by high phenotypic plasticity and dependence on environmental conditions.

In the reference 54 varieties crop Dahlia, where this is mentioned in the description.

Dahlia color is evaluated during full bloom by visual comparison with color groups such as white, yellow, orange, bronze, red, pink, lilac, or purple. According to UPOV guidelines, the primary characteristics for variety description are the main color of the inner side of the ray floret and the presence of additional colors that define bicolor or variegated patterns.

The trait exhibits significant variability due to the complex flavonoid pathway of anthocyanin and carotenoid synthesis. Color can vary under the influence of night temperatures, light intensity, nitrogen nutrition, and soil pH. High ecological plasticity requires caution when diagnosing variety degeneration, as temporary deviations in shade may be caused by environmental factors rather than genetic degradation.

General information about the subject — on the page Flower color.

Sources8

Varieties of Dahlia mentioned in the description

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.