Diseases
Olpidium brassicae, Pythium debaryanum, Rhizoctonia solani, Thanatephorus cucumeris, Phoma lingam, Fusarium sp., Botrytis cinerea, Pectobacterium atrosepticum, Pectobacterium carotovorum
Blackleg is a group of diseases of the basal stem part caused by soil-borne fungi, oomycetes, or bacteria, leading to lodging and plant death. The disease is characterized by darkening and thinning of the stem, often accompanied by the rapid death of young seedlings and transplants.
Mentioned in descriptions 880 varieties reference book.
Blackleg is a complex of diseases affecting the basal zone of young plant stems, which triggers the appearance of constrictions, tissue water-soaking, and subsequent crop lodging. Depending on the plant species, the causative agents can be various fungi, oomycetes, or bacteria that induce rot, causing plants to lose stem strength and be easily pulled from the soil, while in the case of potatoes, they show signs of wilting and tuber decay.
Pathogen development is closely linked to soil conditions, such as high moisture, excessive watering, poor ventilation, and sharp temperature fluctuations. Agrotechnical factors, including dense planting and increased substrate acidity, significantly increase the risk of infection, which under unfavorable conditions is capable of destroying up to 100% of crops in a short period.
Variety resistance to blackleg is an important breeding trait, which in many crops has a polygenic nature and an additive mode of inheritance. Resistance evaluation in variety trials is conducted through artificial inoculation of tubers or stems under laboratory conditions, as well as through field observations in infection nurseries. The final degree of resistance is expressed in quantitative scores or percentage of infection, with tolerant forms being identified that are capable of maintaining productivity while infected.
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 tuberosum L. · Potato
SOLANA SEEDS UNITED KINGDOM LTD. UNIT 4
Solanum tuberosum L. · Potato
NORIKA NORDRING-KARTOFFELZUCHTUND VERMEHRUNGS GmbH
Solanum tuberosum L. · Potato
Wolfgang Walter
Solanum tuberosum L. · Potato
Robert W. Hoopes
Solanum tuberosum L. · Potato
SOLANA SEEDS UNITED KINGDOM LTD. UNIT 4
Solanum tuberosum L. · Potato
Jack Dunnett
Solanum tuberosum L. · Potato
Wolfgang Walter
Solanum tuberosum L. · Potato
Winfried Lange, Frank Lange
Solanum tuberosum L. · Potato
Teagasc
Solanum tuberosum L. · Potato
Wolfgang Walter
Solanum tuberosum L. · Potato
DR. LUDWIG SIMON
Solanum tuberosum L. · Potato
SOLANA GMBH & CO KG
Solanum tuberosum L. · Potato
PLANT BREEDING INTERNATIONAL
Brassica napus var. napus · Rapeseed
Monsanto Technology LLC (SAD)
Brassica napus var. napus · Rapeseed
MONSANTO SAS IMMEUBLE EL YSEES LA DEFENSE
Brassica napus L. · Rapeseed
PIONEER OVERSEAS CORPORATION
Solanum tuberosum L. · Potato
VEREINIGTE SAATZUCHTEN (DE)
Solanum tuberosum L. · Potato
Potato Marketing Board Edinbourgh Maner Place (UK)
Beta vulgaris Sugar Beet Group · Sugar beet
Syngenta Seeds
Beta vulgaris Sugar Beet Group · Sugar beet
Dietrich Hauer, Wolfgang Mechelke,
Solanum tuberosum L. · Potato
Winfried Lange, Frank Lange
Solanum tuberosum L. · Potato
Saka-Ragis (DE)
Beta vulgaris Sugar Beet Group · Sugar beet
SESVANDERHAVE NV-SA, BE
Solanum tuberosum L. · Potato
Teagasc