Caobado
ActiveCucumis sativus L. · Cucumber
SEMILLAS FITO, S.A.
ES
2 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.
Bacares
ActiveSolanum lycopersicum L. · Tomato
Nunhems B.V.
NL
4 records
Annico Sense
Application submittedSolanum lycopersicum L. · Tomato
Enza Zaden Beheer B.V.
NL
3 records
Asterius
ActiveSolanum lycopersicum L. · Tomato
Enza Zaden Beheer B.V.
NL
3 records
Albelo
ActivePopulus L. · Poplar
Stichting Wageningen Research
Zorayda
TerminatedSolanum lycopersicum L. · Tomato
Enza Zaden Beheer B.V.
NL
4 records
Zayda
ActiveSolanum lycopersicum L. · Tomato
Rijk Zwaan Zaadteelt en Zaadhandel B.V.
NL
3 records
Xolatyl
ActiveSolanum lycopersicum L. · Tomato
Axia NL B.V.
NL
3 records
Xylora
ActiveSolanum lycopersicum L. · Tomato
Axia Vegetable Seeds B.V.
NL
3 records
Xiomara
ActiveSolanum lycopersicum L. · Tomato
Axia Vegetable Seeds B.V.
NL
3 records
Xirenita
ActiveSolanum lycopersicum L. · Tomato
Axia Vegetable Seeds B.V.
NL
4 records
Xylia
ActiveSolanum lycopersicum L. · Tomato
Axia Vegetable Seeds B.V.
NL
3 records
Yarimaru
ActiveSolanum lycopersicum L. · Tomato
Monsanto Vegetable IP Management B.V.
NL
4 records
Xandor XR
ActiveSolanum lycopersicum L. · Tomato
Axia NL B.V.
NL
3 records
Xacao
ActiveSolanum lycopersicum L. · Tomato
Axia NL B.V.
NL
3 records
Xaranja
ActiveSolanum lycopersicum L. · Tomato
Axia Vegetable Seeds B.V.
NL
3 records
Xandor
ActiveSolanum lycopersicum L. · Tomato
Axia Vegetable Seeds B.V.
NL
3 records
Yakamoz
ActiveSolanum lycopersicum L. · Tomato
Rijk Zwaan Zaadteelt en Zaadhandel B.V.
NL
4 records
Web
ActiveSolanum lycopersicum L. · Tomato
Societa' Agricola Italiana Sementi -S.A.I.S S.p.a-
IT
2 records
Xolany
ActiveSolanum lycopersicum L. · Tomato
Axia Vegetable Seeds B.V.
NL
3 records
Xenia
ActiveSolanum lycopersicum L. · Tomato
Axia Vegetable Seeds B.V.
NL
3 records
Wazari
TerminatedLactuca sativa L. · Lettuce
Clause Semences SA (FR)
FR
3 records
Wafira
ActiveSolanum lycopersicum L. · Tomato
Rijk Zwaan Zaadteelt en Zaadhandel B.V.
NL
3 records
Volicia
TerminatedSolanum lycopersicum L. · Tomato
Rijk Zwaan Zaadteelt en Zaadhandel B.V.
NL
4 records