Diseases
Sclerotinia sclerotiorum
White mold is a dangerous fungal disease caused by a soil-borne pathogen that affects a wide range of crops and persists in the soil in the form of sclerotia. The disease leads to significant crop losses and reduced product quality.
Mentioned in descriptions 3 042 varieties reference book.
The disease manifests as seedling rot and the appearance of brown, water-soaked spots on stems and flower heads, which become covered with a dense, white, cotton-like mycelial growth. Black, dense structures known as sclerotia form inside and on the surface of tissues, serving as a source of infection.
Pathogen development depends on temperature ranges from +10°C to +25°C, as well as high soil and air humidity, which are necessary for the germination of sclerotia. The risk of infection increases with high planting density, poor crop rotation, and excessive nitrogen fertilization.
Resistance of varieties to white mold is a quantitative polygenic trait provided by cell wall density and the plant's ability to neutralize oxalic acid secreted by the fungus. Resistance assessment in variety trials is conducted by recording the spread and severity of plant infection under field conditions on natural or artificial inoculation plots.
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.
Helianthus annuus L. · Sunflower
Euralis Semences, F
Glycine max (L.) Merr. · Soybean
Saatzucht Donau GmbH & Co.KG
Helianthus annuus L. · Sunflower
Syngenta Crop Protection AG Seeds Divison
Brassica napus var. napus · Rapeseed
PRUVOT JEAN-CLAUDE
Helianthus annuus L. · Sunflower
Euralis Semences FR
Helianthus annuus L. · Sunflower
Sadik El Sayed
Brassica napus var. napus · Rapeseed
Norddeutsche, D
Brassica napus var. napus · Rapeseed
Ragt, F
Brassica napus L. · Rapeseed
Norddeutsche Pflanzenzucht Hans Georg Lembke KG,DE
Brassica napus var. napus · Rapeseed
RAGT 2n, FR
Brassica napus var. napus · Rapeseed
KWS, D
Helianthus annuus L. · Sunflower
Semences Cargill SA (FR)/Etablissements M. Lesgourgues (FR)
Brassica napus var. napus · Rapeseed
Syngenta Participations AG
Glycine max (L.) Merr. · Soybean
Patrice Jeanson
Glycine max (L.) Merr. · Soybean
Semences Prograin Inc
Helianthus annuus L. · Sunflower
KWS SAAT SE, KWS Semena Bulgaria EOOD
Brassica napus var. napus · Rapeseed
Reinhard Hemker
Helianthus annuus L. · Sunflower
Syngenta Crop Protection,CH
Trifolium pratense L. · Red clover
MOUSSET-DECLAS| C. Mousset-Declas c/o Agri Obtentions/INRA
Brassica napus var. napus · Rapeseed
Syngenta Crop Protection,CH
Helianthus annuus L. · Sunflower
Syngenta Crop Protection AG, Seeds Division, CH
Brassica napus var. napus · Rapeseed
Dieter Stelling
Glycine max (L.) Merr. · Soybean
Saatzucht Donau GmbH & Co.KG
Glycine max (L.) Merr. · Soybean
Saatzucht Donau GmbH & Co.KG