TAN 01549
ActiveRosa L. · Rose
Hans Jurgen Evers
UA
12 records
Diseases
Powdery mildew of rose
Rosa L.
A fungal disease of roses caused by the obligate parasite Podosphaera pannosa. It manifests as a white coating on leaves and shoots, causing plant organ deformation and underdeveloped buds.
In the reference 785 varieties crop Rose, where this is mentioned in the description.
The causative agent of rose powdery mildew is the fungus Podosphaera pannosa, characterized by the presence of physiological races and pathotypes, which determines the specificity of interaction with host plant genotypes. The infection actively develops at temperatures of 16–27 °C under high humidity conditions, not requiring the presence of liquid water for spore germination.
The disease affects all above-ground organs of the rose: a characteristic coating forms on the leaves, causing deformation and discoloration, while mycelium on shoots and buds leads to stem curvature and premature abscission of ovaries. Field trials, such as the ADR system, are used to evaluate cultivar resistance.
Genetic control of resistance includes dominant genes, in particular Rpp1, as well as the use of NBS-LRR resistance gene analogs. A promising direction in breeding is work with the MLO gene family, specifically RhMLO1 and RhMLO2, which the pathogen requires for infection; their deactivation allows for the development of plants with a broad spectrum of resistance.
General information about the subject — on the page Powdery mildew.
Varieties of Rose 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.
NOA 38121
ActiveRosa L. · Rose
Reinhard Noack
DE
8 records
FAZA 245
ActiveRosa L. · Rose
Rosaplants SCEA (FR)
FR
NL
8 records
TANFU DERMOS
Protection expiredRosa L. · Rose
TANTAU NACH| Rosen Tantau Mathias Tantau Nachfolger
DE
DK
NL
5 records
TAN 00681
ActiveRosa L. · Rose
Hans Jurgen Evers
CA 29
ActiveRosa L. · Rose
Davidson Campbell G. / Dyck Larry J.
Meidebenne
ActiveRosa L. · Rose
MEILLAND ALAIN ANTOINE
BG
FR
HU
PL
UA
22 records
Meicofum
ActiveRosa L. · Rose
S.N.C. Meilland & Cie
DE
FR
HU
IT
NL
PL
22 records
Korveco
ActiveRosa L. · Rose
Wilhelm Kordes Sparrieschoop
BE
DE
ES
FI
FR
HU
+4
20 records
Meicobuis
ActiveRosa L. · Rose
MEILLAND ALAIN ANTOINE
BG
HU
NL
PL
19 records
Korbacol
ActiveRosa L. · Rose
Wilhelm Kordes,Tim-Hermann Kordes,Margarita Kordes
DE
ES
FR
HU
IT
NL
+1
17 records
Tankalcig
ActiveRosa L. · Rose
ROSEN TANTAU,MATHIAS TANTAU N.
DE
HU
NL
PL
UA
18 records
Pekcougel
ActiveRosa L. · Rose
Pekmez, Paul|La Petite Pierre, 67290 Wingen-sur-Moder, France
DE
ES
FR
IT
NL
16 records
Korenon
ActiveRosa L. · Rose
Wilhelm Kordes,Tim-Hermann Kordes,Margarita Kordes
DE
ES
FI
HU
NL
SE
15 records
Tanitef
ActiveRosa L. · Rose
ROSEN-TANTAU MATHIAS-TANT
DE
ES
FR
IT
NL
PL
14 records
Scholtec
ActiveRosa L. · Rose
Schreurs, P.
UA
16 records
Osiana
ActiveRosa L. · Rose
Rosen Tantau KG
DE
ES
FR
IT
NL
14 records
Olijplam
ActiveRosa L. · Rose
Olij Huibert W.
NL
PL
17 records
Noaschnee
ActiveRosa L. · Rose
Werner NOACK (DE)
BE
DE
ES
FR
IE
IT
+2
14 records
Meinalpir
ActiveRosa L. · Rose
Meilland, Alain A.|Antibes, France
FR
15 records
Meileyet
ActiveRosa L. · Rose
Meilland Star Rose S.A.
FR
15 records
Tanaledev
ActiveRosa L. · Rose
Rosen-Tantau Mathias Tantau Nachfolger
NL
PL
UA
14 records
Ruirorap
ActiveRosa L. · Rose
Pouw, A.
NL
PL
13 records
Ruicrevi
ActiveRosa L. · Rose
POUW| A.A. Pouw
DE
ES
FR
IT
NL
13 records