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.
Pisum sativum L. · Pea
Cebeco Handelsraad (NL)
Dianthus caryophyllus L. · Carnation
STICHTING| Stichting Dienst Landbouwkundig Onderzoek
Solanum lycopersicum L. · Tomato
PETOSEED CO
Phaseolus vulgaris L. · Common bean
Nunhems Zaden BV (NL)
Solanum lycopersicum L. · Tomato
Les Graines Caillard Sa (FR)
Dianthus caryophyllus L. · Carnation
STICHTING| Stichting Dienst Landbouwkundig Onderzoek
Capsicum annuum L. · Bell pepper
GRAINES GAUTIER, S.A.
Brassica napus L. · Rapeseed
JOHANNES DIECKMANN
Zea mays L. subsp. mays (Sweet Corn Group) · Sweet corn
Syngenta Seeds B.V.
Cucumis sativus L. · Cucumber
SYNGENTA SEEDS B.V.
Phaseolus vulgaris L. · Common bean
VILMORIN, S.A.
Phaseolus vulgaris L. · Common bean
PLANTICO HODOWLA I NASIENNICTWO OGRODNICZE ZIELONKI SP. Z O.O.
Cucumis melo L. · Melon
Nunhems B.V./Laboratioire ASL S.N.C.
Solanum lycopersicum L. · Tomato
Sakata Siam Seed Co. Ltd (TH)
Brassica oleracea L. (White Cabbage Group) · White cabbage
Bejo Zaden B.V.
Phaseolus vulgaris L. · Common bean
Pop Vriend Research B.V.
Zea mays L. subsp. mays (Sweet Corn Group) · Sweet corn
HM Clause Inc (US)
Lolium multiflorum Lam. var. westerwoldicum Wittm. · Westerwolds Ryegrass
FAL Station de Recherche Agronomique Federale (CH)
Phaseolus vulgaris L. · Common bean
Van Waveren Saaten GmbH
Brassica oleracea L. (Savoy Cabbage Group) · Savoy cabbage
Hazera Seeds B.V.
Medicago sativa L. · Alfalfa
W-L Research
Phaseolus vulgaris L. · Common bean
P.P.H.U. OGRODNIK DARIUSZ NOWICKI
Solanum torvum Sw. · Turkey berry
BLUMEN GROUP S.P.A
Phaseolus vulgaris L. · Common bean
Bakker Brothers Gebroeders Bakker Zaadteelt en Zaadhandel BV