Šampion Red
ActiveMalus domestica (Suckow) Borkh. · Apple
Sempra Praha a.s., CZ
CZ
8 records
Diseases
Apple Powdery Mildew
Malus domestica (Suckow) Borkh.
A fungal disease of apple trees caused by the obligate parasite Podosphaera leucotricha. It is characterized by the appearance of a grey-white coating on young shoots, leaves, and inflorescences, causing them to deform and wither.
In the reference 1 127 varieties crop Apple, where this is mentioned in the description.
The pathogen is the fungus Podosphaera leucotricha (anamorph Oidium farinosum), which primarily infects non-lignified plant parts via haustoria. The pathogen overwinters as mycelium inside fruit and vegetative buds, from which infected shoots develop in the spring.
The disease manifests as a powdery coating, which eventually acquires a reddish hue. Affected leaves curl and lose turgidity, inflorescences become deformed and drop, and a characteristic 'russet netting' may form on the fruit.
In apple breeding for resistance to the pathogen, the introgression of specific genes, such as Pl-1, Pl-2, Pl-w, and Pl-d, plays a key role. Molecular marker methods are used to identify resistant genotypes, often in combination with scab immunity assessment.
General information about the subject — on the page Powdery mildew.
Varieties of Apple 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.
Rambeau
ActiveMalus domestica (Suckow) Borkh. · Apple
Domaine Public (FR)
FR
2 records
Blaník
ActiveMalus domestica (Suckow) Borkh. · Apple
Ústav experimentální botaniky AV ČR, v.v.i. (CZ)
CZ
9 records
Domaines du Calvados
ActiveMalus domestica (Suckow) Borkh. · Apple
Domaine Public (FR)
FR
2 records
XUANINA
ActiveMalus domestica (Suckow) Borkh. · Apple
SERIDA
ES
2 records
Rea Agata
ActiveMalus domestica (Suckow) Borkh. · Apple
Prof. Dr. Christa Fischer / Dr. Andreas Peil im Inst. f. ZF an gartenb. Kulturen und Obst -Julius-Kühn-Institut-
DE
UA
5 records
Brkinka
ActiveMalus domestica (Suckow) Borkh. · Apple
SI
2 records
Douce Coet Ligné
ActiveMalus domestica (Suckow) Borkh. · Apple
Domaine Public (FR)
FR
2 records
Ellison's Orange
ActiveMalus domestica (Suckow) Borkh. · Apple
NL
4 records
Dima
ActiveMalus domestica (Suckow) Borkh. · Apple
VÝZKUMNÝ A ŠLECHTITELSKÝ ÚSTAV OVOCNÁŘSKÝ HOLOVOUSY s.r.o. (CZ)
CZ
5 records
Dublet
ActiveMalus domestica (Suckow) Borkh. · Apple
Sempra Praha a.s., CZ
CZ
4 records
Meteor
ActiveMalus domestica (Suckow) Borkh. · Apple
VÝZKUMNÝ A ŠLECHTITELSKÝ ÚSTAV OVOCNÁŘSKÝ HOLOVOUSY s.r.o. (CZ)
CZ
8 records
Lipno
ActiveMalus domestica (Suckow) Borkh. · Apple
Ústav experimentální botaniky AV ČR, v.v.i. (CZ)
CZ
8 records
Cortland Wicki
ActiveMalus domestica (Suckow) Borkh. · Apple
Instytut Ogrodnictwa - Państwowy Instytut Badawczy
PL
3 records
Oliwka Żółta
ActiveMalus domestica (Suckow) Borkh. · Apple
Instytut Ogrodnictwa - Państwowy Instytut Badawczy
PL
3 records
Bay 9238
Application submittedMalus domestica (Suckow) Borkh. · Apple
Michael Neumüller
PL
2 records
REINETA GRIS DEL CANADA
ActiveMalus domestica (Suckow) Borkh. · Apple
ES
2 records
Colapuy
ActiveMalus domestica (Suckow) Borkh. · Apple
Domaine Public (FR)
FR
2 records
Roquet rouge
ActiveMalus domestica (Suckow) Borkh. · Apple
Domaine Public (FR)
FR
2 records
Cabarette
ActiveMalus domestica (Suckow) Borkh. · Apple
Domaine Public (FR)
FR
2 records
Koksa Pomarańczowa
ActiveMalus domestica (Suckow) Borkh. · Apple
Instytut Ogrodnictwa - Państwowy Instytut Badawczy
PL
3 records
Orange suisse
ActiveMalus domestica (Suckow) Borkh. · Apple
Domaine Public (FR)
FR
2 records
Reinette de Fugelan
ActiveMalus domestica (Suckow) Borkh. · Apple
Domaine Public (FR)
FR
2 records
Reinette de Landsberg
ActiveMalus domestica (Suckow) Borkh. · Apple
BURCHARDT (DE)
FR
2 records