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.

Carillon

Terminated

Lolium perenne L. · Perennial ryegrass

MOMMERSTEEG INTERNATIONAL| Mommersteeg International B.V.

BE DE FR NL

10 records

Beskyd

Active

Trifolium pratense L. · Red clover

SLECHTITELSKA STANICE HLADKE' ZIVOTICE S.R.O.

AT CZ IT SK

9 records

Broca

Active

Triticum aestivum L. · Bread wheat

Landwirtschaftliche Lehranstalten Triesdorf

EE LT PL

10 records

Bernstein

Active

Triticum aestivum L. · Bread wheat

Syngenta Participations AG, 4058 Basel

10 records

Boomer

Active

Triticum aestivum L. · Bread wheat

RAGT SEEDS LTD

DK PL UA

9 records

Barelli

Active

Lolium multiflorum Lam. ssp. italicum (A. Br.) Volkart · Italian ryegrass

LIAN VAN KRUIJSSEN

BE FR HR LU

7 records

Barmultra II

Active

Lolium multiflorum Lam. ssp. italicum (A. Br.) Volkart · Italian ryegrass

Barenbrug Holland B.V. (NL)

BE HR LU

6 records

Attractie

Active

Lactuca sativa L. · Lettuce

SUTTONS CONSUMER PRODUCTS LTD

HR HU SI SK

6 records

Aura

Active

Triticum aestivum L. · Bread wheat

Hodowla Roslin Strzelce Sp z.o.o. Grupa IHAR

EE FI HR PL

9 records

Asketis

Terminated

Triticum aestivum L. · Bread wheat

STRUBE GMBH&CO.KG

BE DK PL

11 records

Reall

Active

Helianthus annuus L. · Sunflower

Sebastien Chatre

FR IT UA

7 records

Alma

Terminated

Allium porrum L. · Leek

Rijk Zwaan B.V.

CZ NL PL SK

7 records

Alatus

Active

Triticum aestivum L. · Bread wheat

Strube Research GmbH&Co KG

AT EE LT UA

7 records

Admont

Active

Triticum aestivum L. · Bread wheat

Strube Research GmbH&Co KG

LT PL UA

8 records

Karur

Active

Triticum durum Desf. · Durum wheat

RAGT SA (FR)

BG FR HU

7 records

ES Belfis

Active

Helianthus annuus L. · Sunflower

Euralis Semences

BG IT UA

8 records

Marcopolo

Active

Triticum aestivum L. · Bread wheat

RAGT 2n

ES FR IT

8 records

Teksas

Active

Hordeum vulgare L. · Barley

Hodowla Roslin Strzelce Sp z.o.o. Grupa IHAR

LT PL

8 records

Aberplentiful

Active

Lolium perenne L. · Perennial ryegrass

ABERYSTWYTH UNIVERSITY

DE IE NL

8 records

SY Cadix

Active

Helianthus annuus L. · Sunflower

Syngenta Crop Protection AG

ES UA

6 records

Chardin

Active

Lolium perenne L. · Perennial ryegrass

DLF Trifolium A-S, DK

FR NL

9 records

Vanilla

Active

Beta vulgaris Sugar Beet Group · Sugar beet

Vestergaard Lisbet

DE HU UA

7 records

Toddington

Active

Lolium perenne L. · Perennial ryegrass

Force Limagrain SA (FR)

DE FR LU

9 records

Zollernperle

Active

Triticum aestivum L. subsp. spelta (L.) Thell. · Spelt

Friedrich Longin

DE LU 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.