Diseases
Capsicum annuum L.
A fungal disease of pepper caused by the hemiendophytic pathogen Leveillula taurica. It manifests as chlorotic spots and subsequent leaf drop, leading to reduced yields and defoliation of the plants.
In the reference 185 varieties crop Bell pepper, where this is mentioned in the description.
The causal agent of powdery mildew on pepper is the fungus Leveillula taurica (anamorphic stage Oidiopsis taurica). Unlike most powdery mildew fungi, this pathogen is a hemiendophyte: the mycelium penetrates the plant tissues through the stomata, and the conidiophores emerge through the stomatal openings.
The disease begins with the appearance of irregular chlorotic spots on the upper side of the leaves. A characteristic whitish coating forms on the underside beneath the spots. As the infection progresses, the spots become necrotic and the leaves drop, which causes growth stunting and sunscald of the fruits due to plant defoliation.
There is no standardized classification of pathogen races. In breeding, resistance in cultivars is designated by the code Lt. Research has identified the PMR1 locus, located on the 4th chromosome of pepper, which provides genetic resistance to this pathogen and is actively used in breeding programs.
General information about the subject — on the page Powdery mildew.
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.
Capsicum annuum L. · Bell pepper
Rijk Zwaan Zaadteelt en Zaadhandel B.V.
Capsicum annuum L. · Bell pepper
Rijk Zwaan Zaadteelt en Zaadhandel B.V.
Capsicum annuum L. · Bell pepper
Syngenta Seeds B.V.
Capsicum annuum L. · Bell pepper
RUSKO JOZSEF
Capsicum annuum L. · Bell pepper
Vilmorin-Mikado S.A.S.
Capsicum annuum L. · Bell pepper
Syngenta Crop Protection AG
Capsicum annuum L. · Bell pepper
HM.Clause S.A.S.
Capsicum annuum L. · Bell pepper
Syngenta Crop Protection AG
Capsicum annuum L. · Bell pepper
Vilmorin-Mikado SAS (FR)
Capsicum annuum L. · Bell pepper
SEMILLAS FITO, S.A.
Capsicum annuum L. · Bell pepper
HAZERA SEEDS BV
Capsicum annuum L. · Bell pepper
Enza Zaden Beheer B.V.
Capsicum annuum L. · Bell pepper
Enza Zaden Beheer B.V.
Capsicum annuum L. · Bell pepper
INTERSEMILLAS SAU
Capsicum annuum L. · Bell pepper
Vilmorin-Mikado SAS (FR)
Capsicum annuum L. · Bell pepper
HM.Clause S.A.S.
Capsicum annuum L. · Bell pepper
ALEJANDRO MARTIN CARA
Capsicum annuum L. · Bell pepper
MAGNUM SEEDS INC
Capsicum annuum L. · Bell pepper
Syngenta Crop Protection AG
Capsicum annuum L. · Bell pepper
Syngenta Crop Protection AG
Capsicum annuum L. · Bell pepper
HM.Clause S.A.S.
Capsicum annuum L. · Bell pepper
Enza Zaden Beheer B.V.
Capsicum annuum L. · Bell pepper
Clause Semences SA (FR)
Capsicum annuum L. · Bell pepper
Vilmorin SA (FR)