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.

Tango

Application submitted

Populus x canadensis Moench · Carolina poplar

Laura Rosso^^^Franco Picco^^^Pier Mario Chiarabaglio^^^Massimo Gennaro^^^Sara Bergante^^^Andrea Carra^^^Achille Giorcelli^^^Gianni Allegro^^^Giuseppe Nervo^^^Lorenzo Vietto

1 record

TAN98192

Terminated

Rosa L. · Rose

Hans-Juergen Evers

1 record

Weraiti

Terminated

Populus L. · Poplar

WILKINSON ALLAN

1 record

Sunny Yoursula

Terminated

Chrysanthemum L. · Chrysanthemum

Mark A. Smith

1 record

Toto Rustic

Withdrawn

Rudbeckia L. · Coneflower

Ernst Benary Samenzucht GmbH

1 record

Timavo

Terminated

Populus L. · Poplar

Stefano Bisoffi

1 record

SV1514SK

Active

Zea mays L. · Maize

Monsanto Vegetable IP Management B.V.

1 record

Taliedo

Withdrawn

Chrysanthemum L. · Chrysanthemum

Pieters Joseph & Luc B.V.

1 record

Streamer

Terminated

Chrysanthemum L. · Chrysanthemum

FGB B.V.

1 record

Socrate 23

Active

Triticum durum Desf. · Durum wheat

APSOVSEMENTI S.P.A.

1 record

RUIHYP012B

Application submitted

Hypericum x inodorum Mill. · Tall tutsan

De Ruiter Intellectual Property B.V.

1 record

Resolution

Terminated

Salix L. · Willow

Kevin Lindegaard

1 record

Schoene Helene

Terminated

Pyrus communis L. · European pear

JACOB HELMUT DR.

2 records

RUIRBM009B

Withdrawn

Rosa L. · Rose

De Ruiter Intellectual Property B.V.

1 record

Romagna 3000

Active

Prunus persica (L.) Batsch · Peach

Vincenzo Ossani

1 record

Satin Doll

Terminated

Tradescantia L. · Spiderwort

Rod Richards

1 record

Rhododendron

Application submitted

Rhododendron catawbiense Michx. · catawba rhododendron

TYAS VERBRUGGE

1 record

Relance

Terminated

Chrysanthemum L. · Chrysanthemum

Chrysanthemum Breeders Association Research B.V.

1 record

Remus

Active

Populus x canadensis Moench · Carolina poplar

Eigen Vermogen van het Instituut voor Natuur- en Bosonderzoek (EV-INBO)

1 record

Radcor 09

Terminated

Rosa L. · Rose

William J. Radler

1 record

Pitstop

Terminated

Chrysanthemum L. · Chrysanthemum

Cleangro Ltd

1 record

Orcane

Active

Populus x canadensis Moench · Carolina poplar

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

1 record

Nugaupapil

Terminated

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

Graham N. Brown

1 record

Oxford

Terminated

Hordeum vulgare L. · Barley

Nickerson International Research S.N.C.

1 record

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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

All terms →

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.