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.
Medicago sativa L. · Alfalfa
Vincent Beguier
Helianthus annuus L. · Sunflower
Pioneer Overseas Corporation, USA
Solanum lycopersicum L. · Tomato
Syngenta Seeds B.V.
Helianthus annuus L. · Sunflower
Euralis Semences, F
Prunus L. · Plum
Fragaria x ananassa Duchesne ex Rozier · Garden strawberry
Stoppel Peter
Helianthus annuus L. · Sunflower
Euralis Semences, F
Solanum tuberosum L. · Potato
State of Oregon by/through STBHE acting on behalf of Oregon State University
Solanum tuberosum L. · Potato
University of Maine System Board of Trustees
Helianthus annuus L. · Sunflower
Euralis Semences FR
Brassica napus L. · Rapeseed
Reinhard Hemker
Helianthus annuus L. · Sunflower
Lidea France SAS, FR
Brassica napus var. napus · Rapeseed
Syngenta Crop Protection AG
Helianthus annuus L. · Sunflower
PIONEER OVERSEAS CORPORATION
Helianthus annuus L. · Sunflower
Euralis Semences
Brassica napus L. · Rapeseed
KWS SAAT SE and CO KGAA
Brassica napus var. napus · Rapeseed
Limagrain Europe, F
Solanum lycopersicum L. · Tomato
Syngenta Seeds B.V.
Brassica napus var. napus · Rapeseed
SARL ADRIEN MOMONT ET FILS, FR
Brassica napus var. napus · Rapeseed
Monsanto Technology, USA
Brassica napus L. · Rapeseed
Norddeutsche Pflanzenzucht Hans-Georg Lembke KG
Solanum lycopersicum L. · Tomato
Vilmorin SA (FR)
Brassica napus var. napus · Rapeseed
Syngenta Participations,CH
Brassica napus var. napus · Rapeseed
Syngenta Crop Protection AG, Seeds Division, CH