Diseases

Rust

Pucciniales

Rust is a group of dangerous fungal diseases manifesting as pustules on plant organs. The disease significantly reduces yield by disrupting photosynthesis and increasing transpiration.

Mentioned in descriptions 14 859 varieties reference book.

Rust is a collective name for a group of fungal diseases whose pathogens belong to the order Pucciniales. Outwardly, the disease manifests as the formation of pustules on leaves, stems, and other parts of plants—cushions of orange, brown, or black color containing pathogen spores.

Active development of the disease depends on weather conditions, primarily high humidity in the form of dew, fog, or precipitation, and specific temperature ranges unique to each rust species. Additional risk factors include crop density, the presence of plant residues, and the proximity of alternate hosts necessary for the development of certain fungal species.

The evaluation of cultivar resistance in variety trials is carried out under natural or artificial infectious backgrounds during the milk stage by recording the percentage of infection on the flag leaf surface. Based on the data obtained, accessions are classified as immune, resistant, or susceptible, and molecular analysis methods are used to identify resistance genes, such as Lr34.

Sources10

Breakdown by crop

Rust of common wheat 1 722 Barley rust 466 Rust on perennial ryegrass 377 Sunflower rust 362 Triticale rust 294 Rust of Durum Wheat 268 Oat crown rust 182 Rust of sweet corn 157 Rust of rye 116 Bean rust 114 Rose Rust 114 Rust of Kentucky Bluegrass 110 Rust of Italian ryegrass 109 Apple Rust 106 Rust of tall fescue 104 Maize rust 77 Pear Rust 70 Rust of Italian Ryegrass 70 White Rust of Chrysanthemum 59 Rust of sugar beet 59 Rust on Black Currant 52 Leek Rust 52 Rust of Faba Bean 39 Rust of Faba Bean 38

Found in these crops

Bread wheat 1 739 Barley 468 Perennial ryegrass 378 Sunflower 368 Triticale 295 Durum wheat 269 Oat 183 Sweet corn 158 Rye 116 Common bean 115 Rose 114 Kentucky bluegrass 110

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.

Jet

Active

Lolium perenne L. · Perennial ryegrass

Pennington Seeds Inc

5 records

Hickok

Active

Phaseolus vulgaris L. · Common bean

Harris Moran Seed Company (USA) (US)

5 records

Impact

Active

Poa pratensis L. · Kentucky bluegrass

JACKLIN SEED

5 records

Gray Hawk

Active

Lolium perenne L. · Perennial ryegrass

PURE SEED TESTING

5 records

Greenfront

Active

Festuca arundinacea Schreb. · Tall fescue

Top Green (FR)

6 records

Gleam

Active

Rubus idaeus L. · Red raspberry

Scott W Adams

8 records

Glenn

Active

Triticum aestivum L. · Bread wheat

NDSU Research Foundation

6 records

Gladiator

Application submitted

Triticum aestivum L. · Bread wheat

Unisigma (FR)/Limagrain Europe (FR)

9 records

Forblanc

Active

Triticum aestivum L. · Bread wheat

SARL ADRIEN MOMONT ET FILS, FR

7 records

Flagstick

Active

Agrostis stolonifera L. · Creeping bentgrass

DLF SEEDS A/S

6 records

Flash II

Active

Lolium perenne L. · Perennial ryegrass

Mountain View Seeds

5 records

FDL Miranda

Active

Triticum aestivum L. · Bread wheat

SAULESCU NICOLAEITTU GHEORGHEMUSTATEA POMPILIUCIURA AURELITTU MARIANAPETCU ELENA

7 records

Estelle

Active

Lolium perenne L. · Perennial ryegrass

PURE SEED TESTING

8 records

Ecologic

Active

Lolium perenne L. · Perennial ryegrass

Ledeboer Seed LLC

5 records

Duramonte

Active

Triticum durum Desf. · Durum wheat

Südwestdeutsche Saatzucht GmbH&Co.KG

6 records

Diligent

Active

Lolium perenne L. · Perennial ryegrass

DLF SEEDS A/S

5 records

Darkhorse

Active

Poa trivialis L. · Rough bluegrass

DLF Pickseed USA

6 records

Chenoa

Active

Solanum tuberosum L. · Potato

Interseed Potatoes GmbH

7 records

Casteldoux

Active

Triticum durum Desf. · Durum wheat

Florimond Desprez Veuve et Fils, FR

7 records

Caramelo

Active

Zea mays L. subsp. mays (Sweet Corn Group) · Sweet corn

May-Agro Tohumculuk Sanayi ve Ticaret A.Ş.

5 records

Concesa

Active

Phaseolus vulgaris L. · Common bean

Steve Magnuson

7 records

Cesare

Active

Triticum durum Desf. · Durum wheat

S.I.S. SOCIETA' ITALIANA SEMENTI / SYNGENTA FRANCE S.A.S.

7 records

Cipollini

Active

Lolium multiflorum Lam. · Italian ryegrass

DLF Seeds A/S

7 records

Cameron

Active

Lolium perenne L. · Perennial ryegrass

DLF SEEDS A/S

7 records

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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
Verticillium wilt 12 175
Scab 12 064
Grey mold 7 316

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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.