Variety traits

Osteospermum flower color

Osteospermum L.

This trait is key for breeding and DUS testing, encompassing the description of ray floret color, the color of the disc florets, and the presence of additional patterns.

In the reference 6 varieties crop Osteospermum, where this is mentioned in the description.

When describing the color of Osteospermum according to UPOV standards, the main color of the ray florets, the presence of contrasting spots, stripes, or gradient transitions, and the color of the disc, typically characterized by a dark blue or violet 'eye,' are recorded. Observations are conducted on fully opened inflorescences, taking into account potential shade variations during the flowering process.

The intensity of Osteospermum coloration depends on external conditions: to maintain color saturation, the 'cool morning' technique is employed, reducing the temperature by 4–6°C before sunrise. Coloration also correlates directly with light levels and the balance of mineral nutrition, where an excess of nitrogen at the expense of potassium negatively affects the quality of the inflorescences.

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

Sources8

Varieties of Osteospermum 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.