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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.

Endurance

Active

Salix x dasyclados x Salix rehderiana

Kevin Lindegaard

2 records

Harfracas

Protection expired

Rosa L. · Rose

HARKNESS NEW ROSES LTD

2 records

Harextra

Active

Rosa L. · Rose

HARKNESS NEW ROSES LTD

3 records

Delgas

Active

Populus deltoides W. Bartram ex Marshall · Eastern cottonwood

Institut National de Recherche pour l'Agriculture l'Alimentation et l'Environnement (INRAE) , Institut National de Recherche en Sciences et Technologies pour l’Environnement et l’Agriculture (IRSTEA), Institut Technologique FCBA

2 records

Eir

Active

Solanum tuberosum L. · Potato

Graminor AS, N-2322 Ridabu

2 records

EG1102

Application submitted

Panicum virgatum L. · Switchgrass

University of Georgia Research Foundation

2 records

Fireworks

Active

Heuchera L. · Coral Flower

TERRA NOVA NURSERIES INC

2 records

FLORAUBBWB

Active

Aubrieta deltoidea (L.) DC.

Florensis B.V.

2 records

Dolgo

Active

Malus Mill. · Apple

Sagaplant AS, N-3812 Akkerhaugen

2 records

Dolomit

Active

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

DEUTSCHE SAATVEREDELUNG AG

2 records

DLFSHAD3

Active

Chrysanthemum L. · Chrysanthemum

Arie Gerard Post

2 records

DLFMARA1

Active

Chrysanthemum L. · Chrysanthemum

Arie Gerard Post

2 records

Fergus

Terminated

Avena sativa L. · Oat

ABERYSTWYTH UNIVERSITY

2 records

Diva

Active

Populus x canadensis Moench · Carolina poplar

CREA-FL

2 records

Endeavour

Active

Salix schwerinii E.L. Wolf x S. viminalis L

Kevin Lindegaard

2 records

Elda Yellow

Active

Chrysanthemum L. · Chrysanthemum

PARATY B.V.B.A

2 records

Cantona

Terminated

Festuca ovina L. · Sheep's fescue

DLF Seeds A/S

4 records

Centennial Gold

Active

Rhododendron L. · Azalea

BOOMTEELTPRAKTIJKONDERZOEK

2 records

Elizabeth Ann

Active

Geranium maculatum L. · Spotted geranium

Tyssowski Carol / Tyssowski Carol

2 records

Burnished Bronze

Terminated

x Heucherella H. R. Wehrh. · Foamy bells

TERRA NOVA NURSERIES INC

2 records

DLFEVID1

Active

Chrysanthemum L. · Chrysanthemum

Arie Gerard Post

3 records

DLFMEXI4

Active

Chrysanthemum L. · Chrysanthemum

Arie Gerard Post

2 records

Dellinois

Active

Populus deltoides W. Bartram ex Marshall · Eastern cottonwood

Institut National de Recherche pour l'Agriculture l'Alimentation et l'Environnement (INRAE) , Institut National de Recherche en Sciences et Technologies pour l’Environnement et l’Agriculture (IRSTEA), Institut Technologique FCBA

2 records

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