Variety traits

Exacum flower fragrance

Exacum L.

The fragrance of Exacum affine is an important varietal trait characterized by sweet floral, citrus, and woody notes, the intensity of which depends on growing conditions and diurnal dynamics.

In the reference 3 varieties crop Persian violet, where this is mentioned in the description.

The chemical profile of Exacum volatiles includes caryophyllene, β-ionone, 3-carene, and humulene. The intensity of the scent varies throughout the day, peaking during afternoon and nighttime hours. This trait is considered unique for plants with blue flowers, which more often lack a pronounced aroma.

In breeding and expert evaluation, the fragrance is assessed organoleptically, as no generally accepted quantitative scale exists for it. The production of volatile organic compounds is sensitive to agronomic factors, including light, temperature, and stress conditions, which can suppress the intensity of the scent.

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

Sources8

Varieties of Persian violet 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.