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.
Brassica oleracea L. (White Cabbage Group) · White cabbage
Syngenta Crop Protection AG
Lolium x hybridum Hausskn. · Hybrid ryegrass
P.BREED.INT.CAMBRIDGE
Phaseolus vulgaris L. · Common bean
KRAFFT A.
Sorghum bicolor (L.) Moench · Sorghum
Pau Eularis
Juglans regia L. · Persian walnut
Pepinieres de Lalanne, F
Brassica oleracea L. (Cauliflower Group) · Cauliflower
Bayer Holland B.V.
Zea mays L. subsp. mays (Sweet Corn Group) · Sweet corn
Syngenta Seeds B.V. (NL)
Solanum lycopersicum L. · Tomato
Tezier SA (FR)
Brassica rapa L. subsp. pekinensis (Lour.) Hanelt · Napa cabbage
Twan Groot
Medicago sativa L. · Alfalfa
GIE GRASS (FR)
Lolium multiflorum Lam. ssp. italicum (A. Br.) Volkart · Italian ryegrass
Deutsche Saatveredelung AG, D-59557 Lippstadt
Phaseolus vulgaris L. · Common bean
ENZA ZADEN| Enza Zaden Deutschland GmbH & Co KG
Glycine max (L.) Merr. · Soybean
Semences Prograin Inc
Cucumis melo L. · Melon
Ralf Kuijpers
Phaseolus vulgaris L. · Common bean
Instytut Ogrodnictwa - Państwowy Instytut Badawczy \Przedsiębiorstwo Nasiennictwa Ogrodniczego i Szkółkarstwa w Ożarowie Mazowieckim Spółka z o.o.
Asparagus officinalis L. · Asparagus
Ger Beemsterboer
Phaseolus vulgaris L. · Common bean
ZWAAN'S| Rijk Zwaan Zaadteelt en Zaadhandel B.V. (Dep. Variety registration & protection)
Phaseolus vulgaris L. · Common bean
HOLLAND SELECT
Zea mays L. subsp. mays (Sweet Corn Group) · Sweet corn
Syngenta, NL
Phaseolus vulgaris L. · Common bean
Syngenta Seeds BV (NL)
Brassica oleracea L. (White Cabbage Group) · White cabbage
Ger Beemsterboer
Medicago sativa L. · Alfalfa
HORTAG SEED CO.
Medicago sativa L. · Alfalfa
NORTH AMERICAN PLANT BREEDERS
Brassica napus var. napus · Rapeseed
KOIPESOL, S.A./SVALOF AB