Starvine
ActiveSolanum lycopersicum L. · Tomato
Nunhems B.V.
NL
6 records
Diseases
Leaf mold (brown leaf spot)
Passalora fulva
Leaf mold is a dangerous fungal disease of tomatoes causing premature leaf drying and yield loss. It develops predominantly in greenhouses under high humidity, manifesting as spotting and a velvety coating.
Mentioned in descriptions 5 283 varieties reference book.
Leaf mold manifests as chlorotic light-yellow spots on the upper side of the leaf blade, which eventually turn brown. On the underside of the leaf in the affected areas, a characteristic velvety coating develops, changing color from gray-white to olive or brown. The disease usually begins with the lower tier of leaves, leading to their abscission and a significant decrease in the photosynthetic activity of the plant.
The development of the pathogen depends directly on the microclimate in protected ground, where a high relative humidity of 75% and temperatures in the 20–27°C range create a favorable environment. A critical factor is the presence of condensation on the leaf surface, which promotes the germination of fungal spores. The incubation period of the infection ranges from 10 to 15 days.
Varietal resistance is provided by genetic Cf-genes that operate on the principle of recognizing parasite effectors and triggering a hypersensitive response. Since the fungus has high variability and the ability to form new races that overcome protection, gene pyramiding is used in breeding. Resistance assessment in variety testing is conducted using laboratory methods and in infectious backgrounds based on the absence of sporulation.
Breakdown by crop
Found in these crops
Varieties that feature this in their description
Selection based on the description text, not official resistance ratings: such data is not available in registers. Mention indicates that the trait is discussed in the variety's sources; see the variety's profile for details on what is specifically stated.
Springscore
ActiveCucumis sativus L. · Cucumber
NUNHEMS
NL
7 records
Spirioso
ActiveSolanum lycopersicum L. · Tomato
Rijk Zwaan Zaadteelt en Zaadhandel B.V.
NL
6 records
Shirley
ActiveSolanum lycopersicum L. var. lycopersicum · Tomato
ENZA ZADEN
HU
4 records
Severance
ActiveCucumis sativus L. · Cucumber
NUNHEMS
NL
7 records
Showvine
Application submittedSolanum lycopersicum L. · Tomato
Nunhems Netherlands BV
NL
6 records
Seychelle
ActiveSolanum lycopersicum L. · Tomato
Syngenta Seeds B.V.
NL
7 records
Sepalin
ActiveCucumis sativus L. · Cucumber
NUNHEMS
NL
7 records
Sepire
ActiveCucumis sativus L. · Cucumber
NUNHEMS
NL
6 records
Saint Anna
ActiveSolanum lycopersicum L. · Tomato
MARTIJN VAN STEE
NL
6 records
Romietto
ActiveSolanum lycopersicum L. · Tomato
Rijk Zwaan Zaadteelt en Zaadhandel B.V.
NL
6 records
Ringles
ActiveLolium perenne L. · Perennial ryegrass
SEMILLAS FITO' S.A.
IT
4 records
Quete
ActiveCucumis sativus L. · Cucumber
Rijk Zwaan Zaadteelt en Zaadhandel B.V.
NL
5 records
Qualitet
ActiveSolanum lycopersicum L. · Tomato
Syngenta Seeds, NL
NL
4 records
Quantario
ActiveCucumis sativus L. · Cucumber
Rijk Zwaan Zaadteelt en Zaadhandel B.V.
NL
6 records
Pizzazz
ActiveLolium perenne L. · Perennial ryegrass
TURF MERCHANTS
ES
4 records
Picowell
ActiveCucumis sativus L. · Cucumber
Rijk Zwaan Zaadteelt en Zaadhandel B.V.
NL
4 records
Ozkan
ActiveSolanum lycopersicum L. · Tomato
Yuksel Tohum
HU
5 records
Panekra
ActiveSolanum lycopersicum L. · Tomato
Syngenta Seeds, NL
NL
5 records
Parisetto
ActiveSolanum lycopersicum L. · Tomato
Rijk Zwaan Zaadteelt en Zaadhandel B.V.
NL
7 records
Orkestra
ActiveCucumis sativus L. · Cucumber
Syngenta Seeds B.V.
NL
5 records
Obus
ActiveSolanum lycopersicum L. · Tomato
Monsanto Vegetable IP Management B.V.
NL
7 records
Normando
ActiveCucumis sativus L. · Cucumber
SEMILLAS FITO, S.A.
ES
4 records
Nun 09085
ActiveSolanum lycopersicum L. · Tomato
Nunhems B.V., Nunhems B.V.
NL
6 records