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.

Rustler

Withdrawn

Festuca arundinacea Schreb. · Tall fescue

Grassland Oregon

1 record

Royalty F1

Terminated

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

Pop Vriend Seeds B.V.

1 record

Rosepink Yodebo

Terminated

Chrysanthemum x morifolium Ramat. · Florist's daisy

LAYNG| W. John Layng c/o Layng and Company Greenhouses

1 record

RT10013

Withdrawn

x Triticosecale Wittm. ex A. Camus · Triticale

RAGT 2n

1 record

Sacramento

Withdrawn

Triticum aestivum L. · Bread wheat

RAGT 2n, FR

1 record

S2461

Terminated

Beta vulgaris Sugar Beet Group · Sugar beet

SES EUROPE, N.V./S.A.

1 record

RGT Labelur

Withdrawn

Triticum durum Desf. · Durum wheat

RAGT 2n, FR

1 record

Romanivna

Active

Triticum aestivum L. · Bread wheat

Davydiuk Hanna Volodymyrivna, Kovalchuk Serhii Oleksandrovych, Klymenko Iryna Ivanivna, Zaika IEvhenii Viktorovych, Hirko Oleksandr Volodymyrovych, Tkachova Natalia Andriivna, Starychenko Vasyl Mykolaiovych, Holyk Liubov Mykolaivna,

2 records

RGT Moneo

Withdrawn

Triticum aestivum L. · Bread wheat

RAGT 2n, FR

1 record

RGT Topallur

Active

Triticum durum Desf. · Durum wheat

RAGT 2n, FR

1 record

RENINE

Terminated

Chrysanthemum indicum L. · Indian chrysanthemum

Revecu BV (NL)

1 record

Romantyk

Terminated

Helianthus annuus L. · Sunflower

Molodchenkova Olha Olehivna, Babich Valerii Ivanovych, Hanzhelo Mykola Hryhorovych, Libenko Mykola Oleksandrovych, Varenyk Borys Fedorovych, Krut`ko Vasyl` Ivanovych,

2 records

REFOUR

Terminated

Chrysanthemum indicum L. · Indian chrysanthemum

Revecu BV (NL)

1 record

ROBISAL

Terminated

Salix alba L. · White willow

UNIVERSITATEA CRAIOVA - STATIUNEA DE CERCETARE-DEZVOLTARE PENTRU POMICULTURA VALCEA

1 record

Red Reagan

Terminated

Chrysanthemum x morifolium Ramat. · Florist's daisy

NOODELIJK| R. Noodelijk c/o Chrysanthemum Breeders Association N.V.

1 record

RGT Arpegio

Active

Triticum aestivum L. · Bread wheat

RAGT 2n, FR

1 record

RGT Spacio

Active

Triticum aestivum L. · Bread wheat

RAGT 2n, FR

1 record

RGT Kaolite

Active

Avena sativa L. · Oat

RAGT 2n, FR

1 record

R400MR

Active

Zea mays L. subsp. mays (Popcorn Group) · Popcorn

CROOKHAM COMPANY

1 record

Rambler 2

Active

Festuca arundinacea Schreb. · Tall fescue

RUTGERS UNIVERSITY OF NEW JERSEY

1 record

RAGT Sacramento

Withdrawn

Triticum aestivum L. · Bread wheat

RAGT 2n, FR

1 record

Radomysl`

Active

Solanum tuberosum L. · Potato

Balashova Halyna Stanislavivna, Sobran Vasyl Mykhailovych, Bondarchuk Anatolii Andriiovych, Tymko Liudmyla Volodymyrivna, Abdurahimova Tamara Volodymyrivna, Pysarenko Nataliia Vasylivna, Lysak Olena Andriivna, Tymko Mykola Hryhorovych, Sydorchuk Vasyl Iva

2 records

R606

Active

Zea mays L. subsp. mays (Popcorn Group) · Popcorn

CROOKHAM COMPANY

2 records

Quintus

Withdrawn

x Triticosecale Wittm. ex A. Camus · Triticale

NORD| NORDSAAT Agrargesellschaft mit beschraenkter Haftung

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

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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.