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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 Alfalfa 53 Soybean 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.

CIVN223

Terminated

Fragaria x ananassa Duchesne ex Rozier · Garden strawberry

Michelangelo Leis

2 records

Caroline

Active

Rubus idaeus L. · Red raspberry

Swartz, Harry Jan|16022 Jerald Rd., Laurel, MD 20707 / Fiola, Joseph A.|1400 Paterson Ave., Whiting, NJ 08759 / Stiles, Herbert D.|811 Brunswick Ave., Blackstone, VA 23824 / Smith, Brian A.|311 N. Dallas St., River Falls, WI 54022

5 records

DapJur02

Active

Hybrids between Daphne bholua and Daphne odora

Mark Jury

2 records

Blackbeard

Active

Penstemon digitalis Nutt. ex Sims

Hansen Hans A

4 records

Cantik

Active

Dracaena surculosa Lindl. · gold-dust dracaena

Lee Chee Hock

4 records

DANLOV196

Active

Torenia L. · Bluewings

Gavriel Danziger

2 records

Brasil

Active

Philodendron hederaceum (Jacq.) Schott · Heart-leaf philodendron

Acosta Ruben Ernesto

3 records

Bouquet

Active

Veronica L. · Speedwell

Leonardus Theodorus Antonius Vergeer, VERGEER VINCENT

2 records

Copper Queen

Active

Hibiscus coccineus x Hibiscus moscheutos L.

Zwetzig Gretchen

2 records

Aztec Gold

Active

Veronica prostrata L.

TERRA NOVA NURSERIES INC

2 records

Bowles Me Away

Active

Erysimum linifolium (Pers.) J. Gay · Wallflower

Trees Scott C

4 records

Autumn Haze

Active

Coprosma propinqua A. Cunn.

TOM JOHNSON

2 records

Casino

Active

Papaver orientale L. · Oriental poppy

Peek Eleonore|Oudelande, NL

3 records

BELSEMYEL1

Active

Sempervivum arachnoideum L. · Cobweb houseleek

BELGICACTUS B.V.B.A.

2 records

Celebration

Active

Nemesia Vent. · Nemesia

WEBBS GARDEN CENTRES LTD.

2 records

Cameo

Active

Magnolia L. · Magnolia

Vance Hooper

2 records

Anita

Active

Dracaena reflexa Lam. · Song of India

Exotica International S.A.

2 records

Balharblu

Terminated

Scabiosa columbaria L. · Small scabious

SCOTT C TREES

2 records

Blacher

Active

Phygelius E. Mey. · Cape fuchsia

White Anthony Robin|Alresford, GB / White Susan|Alresford, GB

2 records

Balsumleac

Active

Agastache Clayt. ex Gronov. · Giant hyssop

Kievit Christa

2 records

Balcherflora

Active

Erysimum linifolium (Pers.) J. Gay · Wallflower

Trees Scott C

4 records

Balsalskarv

Active

Salvia x sylvestris L. · Wood sage

Christa Kievit

2 records

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