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Diseases

Root rots

Root rots are a complex of soil-borne fungal diseases affecting the underground part and the basal zone of plants. The infection manifests latently and leads to a 15–40% reduction in crop productivity.

Mentioned in descriptions 5 232 varieties reference book.

Root rots represent a group of pathologies affecting roots, tillering nodes, and underground internodes. The disease manifests as stand thinning, necrosis and browning of the root system, as well as the appearance of brown spots, streaks, and coatings on the basal part of the stem. External signs are often hidden and masked as nutrient deficiencies or winterkill, which is expressed in plant stunting, stem breakage, empty ears, and shriveled grain.

Disease development depends on a combination of abiotic factors and agronomic conditions. The infection actively progresses under excessive soil moisture, crop rotation violations, monoculture cropping, and the use of infected seed material. Mineral nutrient imbalance, especially potassium and phosphorus deficiency combined with nitrogen excess, reduces the natural immunity of plants, creating favorable conditions for pathogen activity across a wide temperature range.

In breeding practice, resistance to rots is often defined as tolerance—the ability of a plant to maintain productivity when infected. Variety evaluation is conducted on artificial and natural infection nurseries using quantitative disease scales from 1 to 9. Biophysical and conductometric methods are used for rapid analysis of the degree of tissue damage by pathogenic toxins.

Sources10

Breakdown by crop

Root rots — common wheat 125 Root rots of sugar beet 75 Pea Root Rots 73 Tomato root rot 72 Raspberry root rots 55 Root rots — garden strawberry 47 Root rots of lettuce 43 Alfalfa Root Rot 40 Cucumber root rot 40 Tobacco root rots 35 Barley root rots 35 Maize Root Rots 33 Root rots of soybean 29 Root rots — red clover 20 Root rots — Onion 17 Root rots of Calibrachoa 17 Apple root rot 16 Bean root rots 15 Root rots — Onion 13 Root rots — durum wheat 13 Apple Root Rots 11 Root rots of triticale 10 Root rots of subterranean clover 10 Maize root rot 8

Found in these crops

Tomato 573 Sugar beet 141 Onion 136 Onion 119 Bread wheat 119 Garden strawberry 91 Pea 75 Red raspberry 64 Lettuce 60 hybrids between Solanum lycopersicum L. and S. habrochaites S. Knapp & D.M. Spooner 58 Soybean 53 Alfalfa 53

Varieties that feature this in their description

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.

Red Halen

Application submitted

Allium cepa L. var. cepa · Onion

Bayer Holland B.V.

NL
1 record

Red Rum F1

Active

Allium cepa L. · Onion

Ger Beemsterboer

UA
1 record

Regina

Terminated

Rubus L. · Blackberry

Ilario Ioriatti c/o Berryplant

DE
1 record

Refla

Terminated

Chrysanthemum x morifolium Ramat. · Florist's daisy

CHRYSANTHEMUM| Chrysanthemum Breeders Association N.V.

DE
1 record

Rais`ka

Terminated

Triticum aestivum L. · Bread wheat

Cherniaieva Iryna Mykolaivna, Panchenko Ivan Arkhypovych, Iodkovs`kyi Vladyslav Zdyslavovoch, Riabchun Nataliia Ivanivna, Zviahin Andrii Fedorovych, Yel`nikov Mykola Ivanovych,

UA
2 records

Raffaella

Active

Lactuca sativa L. · Lettuce

Panora s.p.a.

NL
1 record

Red Bull F1

Active

Allium cepa L. · Onion

Ger Bimsdeboer

UA
1 record

Remembe

Active

Solanum lycopersicum L. · Tomato

Tovarystvo z obmezhenoiu vidpovidalnistiu "SPARK SIDZ"

UA
2 records

PS-90

Withdrawn

Glycine max (L.) Merr. · Soybean

KING AGRO

ES
1 record

Rais F1

Active

Cucumis sativus L. · Cucumber

Shevkunov Valerii Mykolaiovych, Shamshyna Hanna Viacheslavivna, Portiankin Oleksii IEvhenovych, Havrysh Serhii Fedorovych,

UA
2 records

Promito

Active

Solanum lycopersicum L. · Tomato

Vreugdenhil Breeding & Seeds B.V.

NL
3 records

Presto F1

Application submitted

Cucumis sativus L. · Cucumber

Yan Kulstra

UA
2 records

Pol`ovyk

Terminated

Triticum aestivum L. · Bread wheat

Lyfenko Lina Semenivna, Babaiants Lazar Tihranovych, Dorofiieva Zinaida Dmytriivna, Nakoniechnyi Mykola IUriiovych, Narhan Tetiana Pavlivna, Fedchenko Voorlodymyr Pavlovych, Yeryniak Mykola Ivanovych, Lyfenko Savelii Pylypovych,

UA
2 records

Pink Unicum F1

Terminated

Solanum lycopersicum L. · Tomato

J. Hoogstarten

UA
2 records

Podolianka

Terminated

Rhododendron simsii Planch. · Indica azalea

Holovko Raisa Petrivna, Prykhod`ko Svitlana Mykolaivna,

UA
2 records

Pieralbo

Terminated

Solanum lycopersicum L. · Tomato

INSTITUT NATIONAL DE LA RECHERCHE AGRONOMIQUE, FR

FR
2 records

Partenit

Terminated

Triticum durum Desf. · Durum wheat

Parfient`iev Mykhailo Hryhorovych, Vasyliev Oleksii Anatoliiovych, Kotelenets` Olena Hryhorivna, Nesterova Nataliia Havrylivna, Palamarchuk Anatolii Ivanovych, Albul Anatolыi Oleksыiovych,

UA
2 records

Paramount

Withdrawn

Medicago sativa L. · Alfalfa

W-L Research

PL
2 records

Parade

Terminated

Allium cepa L. · Onion

BEJO ZADEN

LT
1 record

Perlyna Podillia

Active

Triticum aestivum L. · Bread wheat

Oks`om Vlodymyr Polikarpovych, Morhun Bohdan Volodymyrovych, Morhun Volodymyr Vasylovych,

UA
2 records

Patriot ISK

Withdrawn

Vaccinium corymbosum L. · Highbush blueberry

Instytut Sadownictwa i Kwiaciarstwa im. Szczepana Pieniążka

PL
4 records

Pathfinder

Withdrawn

Allium cepa L. var. cepa · Onion

Rio Colorado Seeds Inc. (US)

FR
1 record

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