Diseases
Pseudomonas, Xanthomonas, Pectobacterium, Ralstonia, Clavibacter, Agrobacterium, Bacillus, Streptomyces
Bacterial diseases are plant diseases caused by non-spore-forming rod-shaped bacteria, manifesting as rots, spots, and wilting. Due to diagnostic complexity and high pathogen variability, the selection of resistant varieties is the primary method for reducing yield losses.
Mentioned in descriptions 5 044 varieties reference book.
Bacterial diseases represent a group of disorders caused by pathogenic bacteria that enter plant tissues through stomata, natural openings, or mechanical injuries. External symptoms include soft and root rots, blights, wilting, and specific spotting with a yellow halo. Symptoms often mimic mineral deficiency, complicating visual diagnosis.
Pathogen development depends directly on environmental conditions, primarily the presence of free moisture and air temperatures in the range of 25–30 °C. High infection intensity can lead to significant crop losses, and in epiphytotic years, to total crop failure, making the analysis of varietal resistance a key element of agronomic strategy.
The evaluation of varietal resistance in variety trials is conducted visually based on the area of affected organs or by using an artificial inoculation background, where plants are infected with controlled strains. Resistant varieties exhibit a hypersensitive response — rapid tissue necrosis at the site of pathogen entry, which limits the spread of infection within the plant.
The efficacy of varietal protection depends on the specificity of the variety to particular races or strains of the pathogen. Agronomists are advised to account for the high genetic variability of bacteria, due to which varietal resistance may change over time, and to pay attention to verified data on resistance to local pathogen populations.
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.
Lolium multiflorum Lam. · Italian ryegrass
SAATZUCHT STEINACH GMBH and CO KG
Phaseolus vulgaris L. · Common bean
Polan, PL
Phaseolus vulgaris L. · Common bean
Monsanto Vegetable IP Management B.V.
Oryza sativa L. · Rice
Cirad-Ca (FR)/Centre Francais du Riz (FR)
Corylus avellana L. · Common hazel
Shawn A. Mehlenbacher, Rebecca L. McCuskey, David C. Smnit
Phaseolus vulgaris L. · Common bean
Pop Vriend Research B.V.
Glycine max (L.) Merr. · Soybean
Claude-Alain Bétrix
Phaseolus vulgaris L. · Common bean
Syngenta Crop Protection AG
Phaseolus vulgaris L. · Common bean
Pop Vriend Research B.V.
Phaseolus vulgaris L. · Common bean
Holland-Select, NL
Lolium perenne L. · Perennial ryegrass
Euro Grass Breeding GmbH Co. KG
Lolium multiflorum Lam. · Italian ryegrass
Saatzucht Steinach GmbH & Co KG
Cucumis sativus L. · Cucumber
KRYMSKAYA OPYTNO-SELEKCZIONNAYA STANCZIYA VNIIR
Phaseolus vulgaris L. · Common bean
Seminis Vegetable Seeds
Phaseolus vulgaris L. · Common bean
Irina Weil in Fa. Bruno Nebelung GmbH & Co. KG
Lolium x hybridum Hausskn. · Hybrid ryegrass
DSP SA UTILISER CODE S/11444 (CH)/Agroscope (CH)
Lolium multiflorum Lam. · Italian ryegrass
Saatzucht Steinach GmbH & Co KG
Phaseolus vulgaris L. · Common bean
Michigan State University
Lolium multiflorum Lam. · Italian ryegrass
RAGT 2N S.A.S
Zea mays L. · Maize
PIONEER HI-BRED INTERNATIONAL
Viburnum plicatum Thunb. · Japanese snowball
Wezelenburg Jan-Willem
Brassica napus L. · Rapeseed
PIONEER OVERSEAS CORPORATION
Phaseolus vulgaris L. · Common bean
Paul Degreef
Brassica napus var. napus · Rapeseed
RUP «NAUCHNO - PRAKTICHESKIJ CZENTR NAN BELARUSI PO ZEMLEDELIYU»