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.
Brassica napus var. napus · Rapeseed
Monsanto Technology LLC, US
Solanum tuberosum L. · Potato
SARPO KFT
Solanum tuberosum L. · Potato
Teagasc
Solanum tuberosum L. · Potato
Friedrich Fedhofer
Solanum tuberosum L. · Potato
SCRI / DAFS
Solanum tuberosum L. · Potato
CYGNET POTATO BREEDERS
Brassica napus L. · Rapeseed
Lantmännen SW Seed
Brassica napus L. · Rapeseed
JOHANNES DIECKMANN
Beta vulgaris Sugar Beet Group · Sugar beet
Henning Friehe
Solanum tuberosum L. · Potato
Lietuvos agrarinių ir miškų mokslų centras
Solanum tuberosum L. · Potato
Lietuvos agrarinių ir miškų mokslų centro Vokės filialas
Solanum tuberosum L. · Potato
Pomorsko Mazurska Hodowla Ziemniaka Sp.z o.o. z siedziba w Strzekecinie
Beta vulgaris L. · Beet
keine Angabe
Solanum tuberosum L. · Potato
Pot Eerke
Solanum tuberosum L. · Potato
Lietuvos agrarinių ir miškų mokslų centro Vokės filialas
Solanum tuberosum L. · Potato
RUP «NAUCHNO - PRAKTICHESKIJ CZENTR NACZIONALNOJ AKADEMII NAUK BELARUSI PO KARTOFELEVODSTVU I PLODOOVOSHHEVODSTVU»
Brassica oleracea L. (Cauliflower Group) · Cauliflower
Brassica napus var. napus · Rapeseed
NSW DEPARTMENT OF AGRICULTURE
Solanum tuberosum L. · Potato
SCOTTISH RESEARCH INSTITUTE
Solanum tuberosum L. · Potato
Šiaurės-Vakarų ŽŪMTI
Solanum tuberosum L. · Potato
Dr. Karl Heinz Möller im Institut f.Kartoffelforschung - Abt. Kartoffelzüchtung - / Dr. Friedrich Papenhagen / Dr. Karl Tändler
Brassica oleracea L. (White Cabbage Group) · White cabbage
Instytut Ogrodnictwa - Państwowy Instytut Badawczy
Solanum tuberosum L. · Potato
Pomorsko Mazurska Hodowla Ziemniaka Sp.z o.o. z siedziba w Strzekecinie
Brassica napus var. napus · Rapeseed
NSW DEPARTMENT OF AGRICULTURE