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.
Phaseolus vulgaris L. · Common bean
Juglans regia L. · Persian walnut
Juglans regia L. · Persian walnut
Glycine max (L.) Merr. · Soybean
Brassica napus var. napus · Rapeseed
Zea mays L. subsp. mays (Sweet Corn Group) · Sweet corn
Brassica napus var. napus · Rapeseed
Fragaria x ananassa Duchesne ex Rozier · Garden strawberry
x Festulolium Aschers. et Graebn. · Festulolium
Lolium perenne L. · Perennial ryegrass
Zea mays L. subsp. mays (Maize Group) · Maize
Lidea France SAS, FR
Zea mays L. subsp. mays (Popcorn Group) · Popcorn
Crookham Company (US)
Capsicum annuum L. · Bell pepper
Syngenta Seeds B.V.
Lolium multiflorum Lam. · Italian ryegrass
DLF SEEDS A/S
Phaseolus vulgaris L. · Common bean
PLANTICO HODOWLA I NASIENNICTWO OGRODNICZE ZIELONKI SP. Z O.O.
Phaseolus vulgaris L. · Common bean
PLANTICO HODOWLA I NASIENNICTWO OGRODNICZE ZIELONKI SP. Z O.O.
Cucumis sativus L. · Cucumber
(Ulveczki Gabriella), (Dr.Szarka Janos), (Balogh Peter),
Solanum lycopersicum L. · Tomato
Syngenta Seeds B.V.
Lolium multiflorum Lam. ssp. italicum (A. Br.) Volkart · Italian ryegrass
VANDIJKE SEMP
Zea mays L. · Maize
SYNGENTA FRANCE S.A.S.
Capsicum annuum L. · Bell pepper
Enza Zaden Beheer B.V.
Brassica oleracea L. (White Cabbage Group) · White cabbage
Gerard Balder
Beta vulgaris Sugar Beet Group · Sugar beet
DLF Beet Seed APS
Glycine max (L.) Merr. · Soybean
Patrice Jeanson