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.

Valda Kitty

Active

Dianthus x allwoodii hort. · Allwood pink

Whetman John

3 records

WSU 1605

Active

Rubus idaeus L. · Red raspberry

Washington State University Puyallup Research and Extension Center

3 records

TP1

Active

Peperomia caperata Yunck. · Emerald ripple peperomia

Tingdal by Lundager ApS

3 records

USCALI48

Active

Calibrachoa Cerv. · Calibrachoa

Ushio Sakazaki

3 records

Strike

Protection expired

Pisum sativum L. · Pea

PURE LINE SEEDS

3 records

Style

Active

Vriesea Lindl. · Vriesea

Nicolaas D.M. Steur^^^Elly Bak

3 records

Sunset Boulevard

Active

Nandina domestica Thunb. · Heavenly bamboo

Boereboom Andre

3 records

SAKPXC044

Application submitted

x Petchoa J. M. H. Shaw · Petchoa

Moriya Kawashima

3 records

Sunbelsoil

Active

Calibrachoa Cerv. · Calibrachoa

Takeshi Kanaya

3 records

Sunbel 8571

Active

Calibrachoa Cerv. · Calibrachoa

Takeshi Kanaya Yasuyuki Murakami

3 records

SAKPXC039

Application submitted

x Petchoa J. M. H. Shaw · Petchoa

Moriya Kawashima

3 records

Solid Heart

Active

Lactuca sativa L. · Lettuce

Central Valley Seeds Inc.

3 records

SAKPXC027

Active

x Petchoa J. M. H. Shaw · Petchoa

TSUKAHARA JUN

3 records

Rhythm and Blues

Active

Astilbe Buch.-Ham. ex D. Don · False goat's beard

Verduin Harry G. J.|Heemskerk, NL

3 records

Saga

Active

Fragaria x ananassa Duchesne ex Rozier · Garden strawberry

Graminor AS, N-2322 Ridabu

5 records

SAKPXC043

Application submitted

x Petchoa J. M. H. Shaw · Petchoa

Moriya Kawashima

3 records

POLSCISIL

Active

Scindapsus pictus Hassk.

SIMON POLS

3 records

Rana Verde

Active

Peperomia Ruiz et Pav. · Peperomia

Smit Obed Jacob

3 records

Paragon

Active

Triticum aestivum L. · Bread wheat

PLANT BREEDING INTERNATIONAL CAMBRIDGE

4 records

Peace

Active

Medicago sativa L. · Alfalfa

Seed Section, Plant Prod. Div., Ontario, K1A 0C6

3 records

Lipstick

Active

Zantedeschia Spreng. · Arum-lily

PETER BECKMAN

4 records

Malling 27

Active

Malus Mill. · Apple

Tydeman, Henry M|England

3 records

L'Amour

Active

Fragaria x ananassa Duchesne ex Rozier · Garden strawberry

Weber Courtney A.|Geneva, NY, US / Sanford John C.|Livonia, NY, US / Maloney Kevin E.|Phelps, NY, US

3 records

Millennia

Active

Vaccinium corymbosum L. · Highbush blueberry

PAUL M. LYRENE

6 records

1 2 ... 37 38 39 40 41 42 43 ... 104 105 Next

Jump to page 15 30 45 50 60 75 90

Diseases

Powdery mildew 33 570
Fusarium wilt and blight 29 887
Viral mosaic diseases 22 022
Downy mildew 16 384
Leaf spot diseases 15 926
Rust 14 859
Verticillium wilt 12 175
Scab 12 064

All terms →

Text source

This summary is compiled from the publications listed in the sources and verified by an editor. It contains no legally significant information; it provides agronomic context for registry data rather than the registry data itself.