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.

Martha

Protection expired

Lolium perenne L. · Perennial ryegrass

DLF-TRIFOLIUM| DLF-Trifolium A/S

BE CZ DE DK PL

7 records

Modus

Protection expired

x Triticosecale Wittm. ex A. Camus · Triticale

Nordsaat Saatzuchtgesellschaft mbH

CZ DE DK PL SE

11 records

P9400

Active

Zea mays L. · Maize

PIONEER HI-BRED INTERNATIONAL

AT HU IT SK UA

11 records

Nicoletta

Terminated

Hordeum vulgare L. · Barley

Saatzucht Donau GmbH & Co.KG

AT DE HR LT SI

9 records

Kym

Protection expired

Hordeum vulgare L. · Barley

ROTHWELL P.B.

DK ES FR SE

11 records

Lupus

Active

x Triticosecale Wittm. ex A. Camus · Triticale

NORDSAAT Saatzuchtgesellschaft mit beschränkter Haftung Herrn Dr. Ralf Schachschneider

CZ DE EE FR LT

12 records

Klaxon

Protection expired

Hordeum vulgare L. · Barley

ROTHWELL P.B.

DK ES FR IE SE

11 records

Limes

Active

Triticum aestivum L. · Bread wheat

DLF B.V.

BE FR NL PL

13 records

Fugato

Protection expired

Secale cereale L. · Rye

HYBRO SAATZUCHT GMBH and CO KG

DE HU LT PL UA

9 records

Koru

Terminated

Hordeum vulgare L. · Barley

Rothwell Plant Breeders

DK ES FR SE

12 records

Crossway

Active

Triticum aestivum L. · Bread wheat

Semalliance Gie (FR)

BE FR PL SK

8 records

Granus

Active

Triticum aestivum L. · Bread wheat

Strube Research GmbH&Co KG

EE LT PL UA

8 records

Daphna

Active

Beta vulgaris Sugar Beet Group · Sugar beet

KWS SAAT SE and CO KGAA

DE DK FR LT SE

7 records

Champion

Active

Triticum aestivum L. · Bread wheat

Florimond Desprez Veuve et Fils, FR

DK FR IE NL

13 records

ES Magnific

Terminated

Helianthus annuus L. · Sunflower

Euralis Semences FR

CZ DE FR IT SK

8 records

Bakfis

Active

Triticum aestivum L. · Bread wheat

RAGT Czech s.r.o.,CZ

HR HU LT SK

9 records

Corsaire

Protection expired

Triticum aestivum L. · Bread wheat

SAS FLORIMOND DESPREZ VEUVE and FILS

FR HR NL SK

10 records

Drifter

Active

Triticum aestivum L. · Bread wheat

TAYLOR MIKE

AT BE NL

12 records

Challenger

Active

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

Seminis Vegetables (NL)

BG HU SI SK

8 records

Candesse

Protection expired

Hordeum vulgare L. · Barley

W VON BORRIES-ECKENDORF GMBH & CO. KOMMANDITGESELLSCHAFT

AT DE EE HU LT

10 records

Amato

Active

Secale cereale L. · Rye

WORTMANN| Dr. H. Wortmann in Fa. Hybro Saatzucht GmbH & Co. KG

AT DE LT PL UA

9 records

Cantalou

Active

Lolium perenne L. · Perennial ryegrass

Carneau Freres SA (FR)

CZ DE FR LU PL

8 records

Bareagle

Terminated

Festuca rubra L. · Red fescue

Barenbrug Holland BV (NL)

CZ DE FI FR SK

7 records

Vanda

Active

Medicago sativa L. · Alfalfa

V.U.R.V.-Piest'any

AT CZ SK UA

10 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.