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.
Beta vulgaris Sugar Beet Group · Sugar beet
Margaret Rekoske
Brassica napus L. · Rapeseed
RAGT 2n
Brassica napus L. · Rapeseed
A/S L DAEHNFELDT
Solanum tuberosum L. · Potato
VAN DER VEEN J.
Brassica oleracea L. (White Cabbage Group) · White cabbage
Saatzucht Quedlinburg-DE
Solanum tuberosum L. · Potato
Yosef Fohel`
Solanum tuberosum L. · Potato
Kweek- en Researchbedrijf Agrico B.V.
Solanum tuberosum L. · Potato
ZUJKOV ANDREJ EVGEN'EVICh / PISKUN GEORGIJ IVANOVICh / ZhUROMSKIJ GENNADIJ KONSTANTINOVICh / KOLYaDKO OL'GA MATVEEVNA / DEMIDKO YaNINA DAVYDOVNA
Solanum tuberosum L. · Potato
RUP «NAUCHNO - PRAKTICHESKIJ CZENTR NACZIONALNOJ AKADEMII NAUK BELARUSI PO KARTOFELEVODSTVU I PLODOOVOSHHEVODSTVU»
Solanum tuberosum L. · Potato
Saka Pflanzenzucht GmbH Co KG
Solanum tuberosum L. · Potato
Sarvari Istvan
Solanum tuberosum L. · Potato
UNIPLANTA| Uniplanta - Saatzucht KG
Solanum tuberosum L. · Potato
Teagasc Crops Research Department
Solanum tuberosum L. · Potato
NORIKA Nordring-Kartoffelzucht-und Vermehrungs-GmbH Gross Luesewitz
Solanum tuberosum L. · Potato
SCOTTISH CROP RESEARCH INSTITUTE
Beta vulgaris Sugar Beet Group · Sugar beet
KWS SAAT SE & CO.KGAA
Solanum tuberosum L. · Potato
Saka Pflanzenzucht GmbH Co KG
Solanum tuberosum L. · Potato
SOLANA SEEDS UNITED KINGDOM LTD. UNIT 4
Raphanus sativus L. var. sativus · Radish
ANTONOVA NINA GEORGIEVNA / KVASNIKOV BORIS VASIL'EVICh / PULKO E'L'ZA SEMENOVNA
Cucumis sativus L. · Cucumber
MORAVOSEED
Solanum tuberosum L. · Potato
Saka Pflanzenzucht GmbH Co KG
Solanum tuberosum L. · Potato
Pomorsko Mazurska Hodowla Ziemniaka Sp.z o.o. z siedziba w Strzekecinie
Solanum tuberosum L. · Potato
ROBERT BRADY
Solanum tuberosum L. · Potato
Agri-food and Biosciences Institute (AFBI)