Skip to content
agronom.cc cultivar database

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.

Pink Nelson

Terminated

Dianthus L. · Carnation

P.Kooij & Zonen B.V.

1 record

Pure White

Withdrawn

Lithodora diffusa (Lag.) I. M. Johnst. · Purple gromwell

Van Veen OZ B.V.

1 record

Raspberry Tart

Withdrawn

Echinacea Moench. · Coneflower

HARINI KORLIPARA

2 records

Nugaupapil

Terminated

Oenothera lindheimeri (Engelm. & A. Gray) W. L. Wagner & Hoch · Lindheimer's beeblossom

Graham N. Brown

1 record

Paris

Terminated

Anthurium-Andreanum-Hybriden · Anthurium

Avo Anthuriums B.V.

1 record

Podaras 16

Withdrawn

Hybrids between Buddleja alternifolia Maxim. and Buddleja davidii Franch.

Cornell University

1 record

Oranges & Lemons

Terminated

Gaillardia Foug. · Blanket flower

Hardy's Cottage Garden Plants

1 record

Optifort

Active

Solanum lycopersicum L. · Tomato

De Ruiter Seeds B.V.

1 record

Mojito

Active

Pilea peperomioides Diels

KMN Beheer B.V.

1 record

Mirmar 50

Application submitted

Prunus cerasifera Ehrh. · Cherry plum

Salvatore Martelli

1 record

Paulina

Active

Rhododendron simsii Planch. · Indica azalea

Karsten Rannacher

1 record

Oosthen

Withdrawn

Lycianthes rantonnetii (Carriere) Bitter · Blue potato bush

CH. HENDRIKS

2 records

Marketta

Active

Fragaria x ananassa Duchesne ex Rozier · Garden strawberry

Tarja Hietaranta

1 record

MERENSKY 5

Application submitted

Persea americana Mill. · Avocado

Sylvie Kremer-Kohne^^^Zelda van Rooyen^^^Stefan Kohne^^^Duncan Smith

1 record

Montblanc

Withdrawn

Fittonia albivenis (Lindl. ex hort. Veitch) Brummitt · Nerve plant

Eden Collection B.V.

1 record

Novapenrub

Terminated

Penstemon barbatus (Cav.) Roth · Beardlip penstemon

Michael S. Dobres^^^Sloane M. Scheiber

1 record

Miss Pearl

Active

Buddleja davidii Franch. · Butterfly bush

Dennis J. Werner, Kultaran Chohan

1 record

Little Mels

Active

Stokesia laevis (Hill) Greene · Stokes' aster

Van Heesbeen Cultures B.V.

1 record

Meishulo

Terminated

Rosa L. · Rose

Alain Antoine Meilland

1 record

Mailling Juno

Withdrawn

Rubus idaeus L. · Red raspberry

East Malling Research

1 record

Merlin

Active

Allium cepa L. var. cepa · Onion

ALLIUM SEEDS UK LTD

1 record

Lilliput

Terminated

Penstemon Schmidel. · Beard Tongue

A T Yates & Son

1 record

KLEAU04262

Withdrawn

Oenothera lindheimeri (Engelm. & A. Gray) W. L. Wagner & Hoch · Lindheimer's beeblossom

Nils Klemm

1 record

Jump to page 15 30 45 60 75 83 90 103