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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 Bread wheat 119 Onion 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.

Scarlett.

Active

Hordeum vulgare L. · Barley

ULRICH and JOSEF BREUN

AT BE BG CZ DE ES +8
37 records

M-IDAS

Active

Triticum aestivum L. · Bread wheat

Syngenta Crop Protection AG

AT HR HU SK UA
17 records

M - 9

Active

Malus Mill. · Apple

RUP «BRESTSKAYA OBLASTNAYA SELSKOXOZYAJSTVENNAYA OPYTNAYA STANCZIYA NAN BELARUSI»

CZ ES HU PL SK UA
17 records

MM - 106

Active

Malus Mill. · Apple

NEIZVESTEN

CZ ES HU PL SK UA
18 records

Malling Centenary

Active

Fragaria x ananassa Duchesne ex Rozier · Garden strawberry

Simpson David

NL UA
13 records

FL 05-107

Active

Fragaria x ananassa Duchesne ex Rozier · Garden strawberry

UNIVERSITY OF FLORIDA, GULF COAST RESEARCH AND EDUCATION CENTER

ES
14 records

M 26

Active

Malus Mill. · Apple

RUP «BRESTSKAYA OBLASTNAYA SELSKOXOZYAJSTVENNAYA OPYTNAYA STANCZIYA NAN BELARUSI»

CZ ES HU PL SK
15 records

SR 2100

Active

Poa pratensis L. · Kentucky bluegrass

SEED RESEARCH OF OREGON

DK HR IT
9 records

M 116

Active

Malus Mill. · Apple

Horticulture Research International

8 records

WSU 2166

Application submitted

Rubus idaeus L. · Red raspberry

Washington State University Puyallup Research and Extension Center

8 records

KAY-008

Active

Lactuca sativa L. · Lettuce

KUBOTA ITSUKI

6 records

Santa Catalina

Active

Rubus idaeus L. · Red raspberry

Marina Gambardella, Pilar Banados, Javiera Grez, Elida Contreras, Pontificia Universidad Catolica de Chile

7 records

Red Wing

Active

Allium cepa L. var. cepa · Onion

Bejo Zaden BV (NL)

BG CZ HR NL
6 records

Saint-Pierre

Active

Fragaria x ananassa Duchesne ex Rozier · Garden strawberry

Shahrokh Khanizadeh

HU NL
9 records

VVA 1

Active

Prunus L. · Plum

RESPUBLIKANSKOE NAUCHNO-PROIZVODSTVENNOE DOCHERNEE UNITARNOE PREDPRITIE «INSTITUT PLODOVODSTVA»

NL
7 records

ML 99

Active

Medicago sativa L. · Alfalfa

PASTURE GENETICS

GR
6 records

C/W-4440

Active

Carthamus tinctorius L. · Safflower

Cal West Seeds - Alforex Seeds

RO
5 records

VVA-1

Active

Prunus tomentosa thunb x P. cerasifera

Krymsk Experiment Breeding Station

7 records

Zig Zag

Active

Scaevola aemula R. Br. · Fairy fan-flower

Saunders, Rachel / Saunders, Rodney

5 records

Cal Depyel

Application submitted

Calibrachoa Cerv. · Calibrachoa

Robert Pierce c/o Goldsmith Seeds, Inc.

5 records

NS Mraz

Active

Pisum sativum L. · Pea

Institute of field and vegetable crops - Novi Sad (SR)

BG
9 records

Ras poly

Active

Beta vulgaris Sugar Beet Group · Sugar beet

Syngenta participation AG

FR IT SE
4 records

NC 3

Active

Nicotiana tabacum L. · Tobacco

NORTH CAROLINA STATE UNIVERSITY

HU PL
4 records

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