Diseases
Solanum lycopersicum L.
A fungal disease of tomato caused by the oomycete Phytophthora infestans, which affects all above-ground plant organs and is characterized by tissue necrosis under conditions of high air humidity.
In the reference 273 varieties crop Tomato, where this is mentioned in the description.
The pathogen Phytophthora infestans (Mont.) de Bary causes the formation of irregular, water-soaked lesions on leaves with a whitish layer of sporulation at humidity levels of 76% or higher. Elongated necrotic streaks form on the stems, leading to fragility, while infection of the fruits begins with firm, brown lesions that subsequently cause tissue softening or desiccation.
In breeding practice, resistance to the pathogen is based on the introgression of genes from the wild species Solanum pimpinellifolium. The Ph-3 gene is considered most effective for breeding and is often used in combination with Ph-2. In international standards, the resistance code for this disease is designated as Pi.
General information about the subject — on the page Late blight.
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.
Solanum lycopersicum L. · Tomato
Przedsiebiorstwo Nasiennictwa Ogrodniczego i Szkolkarstwa w Ozarowie Mazowieckim Spolka z o.o.
Solanum lycopersicum L. · Tomato
PLANTICO HODOWLA I NASIENNICTWO OGRODNICZE ZIELONKI SP. Z O.O.
Solanum lycopersicum L. · Tomato
HAO-DEMETER Vine, Fruit Trees and Vegetable Research Institute
Solanum lycopersicum L. · Tomato
HEINZSEED
Solanum lycopersicum L. · Tomato
HM.Clause S.A.S.
Solanum lycopersicum L. · Tomato
Graines Voltz (FR)
Solanum lycopersicum L. · Tomato
Domaine Public (FR)
Solanum lycopersicum L. · Tomato
INSTITUT NATIONAL DE LA RECHERCHE AGRONOMIQUE, FR
Solanum lycopersicum L. · Tomato
Hazera Seeds B.V.
Solanum lycopersicum L. · Tomato
Dr. Horneburg Bernd, Georg-August-Universität Göttingen
Solanum lycopersicum L. · Tomato
HM.Clause S.A.S.
Solanum lycopersicum L. · Tomato
HM.Clause S.A.S.
Solanum lycopersicum L. · Tomato
Johnny's Selected Seeds
Solanum lycopersicum L. · Tomato
Domaine Public (FR)
Solanum lycopersicum L. · Tomato
Indus & Burpee Private Ltd
Solanum lycopersicum L. · Tomato
BURPEE EUROPE LIMITED
Solanum lycopersicum L. · Tomato
PLANTICO HODOWLA I NASIENNICTWO OGRODNICZE ZIELONKI SP. Z O.O.
Solanum lycopersicum L. · Tomato
WESTERN SEED ESPAÑA, S.A.
Solanum lycopersicum L. · Tomato
HM.Clause S.A.S.
Solanum lycopersicum L. · Tomato
Domaine Public (FR)
Solanum lycopersicum L. · Tomato
BURPEE NL B.V.
Solanum lycopersicum L. · Tomato
Domaine Public (FR)
Solanum lycopersicum L. · Tomato
NEUMAN Seed International (US)
Solanum lycopersicum L. · Tomato
Rijk Zwaan Zaadteelt en Zaadhandel B.V.