Variety traits
Rosa L.
Rose fragrance is an important varietal trait evaluated organoleptically using point scales. Scent intensity is genetically determined by a recessive gene and is highly dependent on the flower opening stage, time of day, lighting, and the agrotechnical condition of the plant.
In the reference 242 varieties crop Rose, where this is mentioned in the description.
To quantitatively assess the fragrance in Rosa L., point systems based on the organoleptic method are used, where 1 point corresponds to no scent or a faint scent, and higher points correspond to a pronounced fragrance. The complexity of breeding for this trait is due to the recessive nature of the gene responsible for scent intensity, which was often sacrificed during selection for hardiness and vase life.
The intensity of the fragrance is strongly influenced by environmental factors: peak intensity is observed during the semi-open flower phase under warm, sunny, and calm weather conditions, primarily in the morning hours from 9 to 11. Adverse conditions, such as heat above 30 degrees, high humidity, a shortage of sunlight of less than 6–8 hours per day, or a suppressed state of the bush, lead to a significant decrease in scent intensity.
General information about the subject — on the page Flower fragrance.
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.
Rosa L. · Rose
MEILLAND STAR ROSE
Rosa L. · Rose
Meilland, Marie-Louise|deceased, late of Antibes, France, by Jean-Pierre La Naour, executor
Rosa L. · Rose
SNC Meilland et Cie
Rosa L. · Rose
Meilland, Alain A.|Antibes, France
Rosa L. · Rose
MEILLAND ALAIN ANTOINE
Rosa L. · Rose
SNC Meilland et Cie
Rosa L. · Rose
MEILLAND MARIE LUISE
Rosa L. · Rose
Meilland International
Rosa L. · Rose
W. KORDES'SOHNE ROSENSCHULEN GMBH & CO KG
Rosa L. · Rose
Wilhelm Kordes
Rosa L. · Rose
W. KORDES'SOHNE ROSENSCHULEN GMBH & CO KG
Rosa L. · Rose
Wilhelm Kordes / Tim-Hermann Kordes / Margarita Kordes in Fa. W. Kordes' Söhne Rosenschulen GmbH & Co KG
Rosa L. · Rose
Wilhelm Kordes (DE)
Rosa L. · Rose
Wilhelm Kordes / Tim-Hermann Kordes / Margarita Kordes in Fa. W. Kordes' Söhne Rosenschulen GmbH & Co KG
Rosa L. · Rose
R. HARKNESS & CO. LTD.
Rosa L. · Rose
Henk de Groot
Rosa L. · Rose
H.C.A. DE GROOT (CD)
Rosa L. · Rose
Rosen Tantau KG
Rosa L. · Rose
CHRISTIAN EVERS
Rosa L. · Rose
Poulsen Roser A/S
Rosa L. · Rose
CHRISTIAN EVERS
Rosa L. · Rose
HANS JURGEN EVERS (T)
Rosa L. · Rose
CHRISTIAN EVERS
Rosa L. · Rose
H.C.A. DE GROOT (CD)