Diseases
Solanum lycopersicum L.
A group of tomato diseases caused by various pathogens, characterized by specific symptoms and resistance mechanisms.
In the reference 563 varieties crop Tomato, where this is mentioned in the description.
Leaf mold, caused by Fulvia fulva (Pf), manifests as rounded yellowish spots with a velvety coating on the underside of leaves. The pathogen has races 1.2, 1.2.3, 1.2.3.4, and breeding is conducted through the use of Cf resistance genes (Cf-2, Cf-4, Cf-9). Stemphylium leaf spot, caused by Stemphylium solani (Ss), S. lycopersici (Sl), and S. botryosum (Sbl), is characterized by small brown-black spots up to 3 mm in size with a yellow halo.
Bacterial spot (Pseudomonas syringae pv. tomato, Xanthomonas campestris pv. vesicatoria) manifests as black water-soaked spots, affecting stems and fruits. Resistance to it is provided by the Pto and Ptr1 genes. Early blight (Alternaria solani, A. tomatophila) is distinguished by concentric dark brown spots; it is characterized by polygenic resistance, unlike the gene-for-gene interaction seen in leaf mold.
General information about the subject — on the page Leaf spot diseases.
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
Syngenta Crop Protection AG
Solanum lycopersicum L. · Tomato
Monsanto, NL
Solanum lycopersicum L. · Tomato
Yuksel Tohum
Solanum lycopersicum L. · Tomato
Syngenta, NL
Solanum lycopersicum L. · Tomato
Michael Edwin Kuenh
Solanum lycopersicum L. · Tomato
SAKATA SEED AMERICA INC US
Solanum lycopersicum L. · Tomato
HEINZSEED
Solanum lycopersicum L. · Tomato
Kees Konst
Solanum lycopersicum L. · Tomato
PETOSEED CO
Solanum lycopersicum L. · Tomato
DE RUITER SEEDS
Solanum lycopersicum L. · Tomato
Clause Semences SA (FR)
Solanum lycopersicum L. · Tomato
Sakata Seed Sudamerica Ltd (BR)
Solanum lycopersicum L. · Tomato
STEFANO CARLI
Solanum lycopersicum L. · Tomato
HAZERA GENETICS
Solanum lycopersicum L. · Tomato
Rijk Zwaan Zaadteelt en Zaadhandel B.V. (NL)
Solanum lycopersicum L. · Tomato
HEINZSEED
Solanum lycopersicum L. · Tomato
Enza Zaden Bikhir B.V.
Solanum lycopersicum L. · Tomato
Rijk Zwaan Zaadteelt en Zaadhandel B.V. (NL)
Solanum lycopersicum L. · Tomato
Shai Nashilevitz
Solanum lycopersicum L. · Tomato
Vilmorin SA (FR)
Solanum lycopersicum L. · Tomato
GRAINES GAUTIER, S.A.
Solanum lycopersicum L. · Tomato
A.G.R. SEEDS LTD
Solanum lycopersicum L. · Tomato
VILMORIN, S.A.
Solanum lycopersicum L. · Tomato
Clause Tezier S.A., Bretigny (FR)