Diseases
Verticillium
Verticillium wilt is a soil-borne disease caused by fungi that block plant vascular tissues, leading to gradual wilting and death. The pathogen can persist in the soil for more than 10 years.
Mentioned in descriptions 12 175 varieties reference book.
Verticillium wilt manifests through the infection of the root system and subsequent colonization of the xylem by the fungal pathogen. The first external symptoms include slow yellowing and curling of the lower leaves, which eventually wither. A diagnostic sign is the browning of the vascular ring in a cross-section of the stem, and in cases of severe infection, a fungal growth may be observed on the plant surface.
The intensity of disease development depends on temperature conditions, with the range of +21°C to +26°C considered optimal. The disease is more pronounced in light soils, during sharp fluctuations in humidity and temperature, as well as in the presence of mechanical root damage or when growing monocultures. The pathogen is a polyphage and affects a wide range of agricultural crops.
Varietal resistance to this disease is based on a genetic mechanism that restricts the penetration and movement of the fungus through the plant's vascular system. During variety testing, the efficacy of cultivars is determined using artificial inoculation methods, which assess the visual degree of symptom development and the plant's ability to maintain productivity under infectious pressure.
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.
Solanum lycopersicum L. · Tomato
Clause Semences SA (FR)
Solanum lycopersicum L. · Tomato
JAN J.DE BRUIN
Penstemon Schmidel. · Beard Tongue
UNIVERSITY OF BRITISH
Helianthus annuus L. · Sunflower
Pioneer Hi-Bred International Inc (US)
Solanum lycopersicum L. · Tomato
Syngenta Crop Protection AG
Solanum lycopersicum L. · Tomato
Enza Zaden B.V.
Solanum lycopersicum L. · Tomato
Ballardini Massimiliano
Rubus L. · Blackberry
Lenkijos sodininkystės ir gėlininkystės institutas
Solanum lycopersicum L. · Tomato
ENZA ZADEN B.V.
Brassica napus var. napus · Rapeseed
M A Pickford
Solanum lycopersicum L. · Tomato
SYNGENTA SEEDS B.V.
Solanum lycopersicum L. · Tomato
Shinya Enomoto
Solanum lycopersicum L. · Tomato
Kees Konst
Solanum lycopersicum L. · Tomato
JAN J.DE BRUIN
Brassica napus L. · Rapeseed
PIONEER OVERSEAS CORPORATION
Solanum lycopersicum L. · Tomato
Bernardus van den Bosch
Solanum lycopersicum L. · Tomato
Gautier Semences SAS (FR)
Brassica napus var. napus · Rapeseed
SVERIGES UTSÄDESFÖRENING SVALÖF
Solanum lycopersicum L. · Tomato
Petr Klapste
Solanum lycopersicum L. · Tomato
GRAINES GAUTIER, S.A.
Solanum lycopersicum L. · Tomato
Sakata Seed Sudamerica Ltd (BR)
Scaevola aemula R. Br. · Fairy fan-flower
Grüber, Garry
Solanum lycopersicum L. · Tomato
Paul Degreef
Lagenaria siceraria (Molina) Standl. · Calabash
Kees Reinink