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.

Kbira

Active

Avena sativa L. · Oat

SEMILLAS BATLLE, S.A.

3 records

Kastell

Active

Triticum aestivum L. · Bread wheat

SECOBRA RECHERCHES S.A.S

3 records

Kolmgreen

Active

Hypericum x inodorum Mill. · Tall tutsan

Kolster Peter R.

2 records

Kantora

Terminated

Avena sativa L. · Oat

COKER PEDIGREED SEED CO.

2 records

Kasztan

Protection expired

Avena sativa L. · Oat

Malopolska Hodowla Roslin Spolka z o.o.

3 records

Jupateco

Terminated

Triticum aestivum L. · Bread wheat

SARH-INIA

2 records

Kodiak

Terminated

Phaseolus vulgaris L. · Common bean

Pop Vriend Research B.V.

3 records

Jowisz

Active

Allium schoenoprasum L. · Chives

SPÓJNIA Hodowla i Nasiennictwo Ogrodnicze sp. z o.o.

3 records

Jouvence

Active

Avena sativa L. · Oat

LEMAIRE DEFFONTAINES S.A.S.

3 records

Kankan

Active

Avena sativa L. · Oat

COMPLEJO ASGROW SEMILLAS

3 records

Kiara R

Application submitted

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

HM.CLAUSE

2 records

Joya

Active

Vicia faba L. var. minuta (hort. ex Alef.) Mansf. · Tick Bean

INIA/IFAPA/CSIC

3 records

Janosik

Active

Allium porrum L. · Leek

PLANTICO HODOWLA I NASIENNICTWO OGRODNICZE ZIELONKI SP. Z O.O.

2 records

Karlos 115

Active

Helianthus annuus L. · Sunflower

Stepanov IEvhenii Olehovych, Parii IUliia Oleksandrivna, Parii Myroslav Fedorovych, Parii IAroslav Fedorovych, Parii Fedir Mykytovych,

5 records

Kampai

Active

Beta vulgaris Sugar Beet Group · Sugar beet

Syngenta Seeds

2 records

Kamelia

Active

Triticum aestivum L. · Bread wheat

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

3 records

Jaak

Terminated

Avena sativa L. · Oat

Johannes Laurson 50%,Ilmar Tamm 20%,Hans Küüts 15%,Ivi Küüts 10%,Kaljo Kask 5%

3 records

Kaizen

Active

x Triticosecale Wittm. ex A. Camus · Triticale

Danko Hodowla Roslin Sp.z.o.o.

2 records

Ivory

Protection expired

Phaseolus vulgaris L. · Common bean

NOVARTIS SEEDS

3 records

Jubilejnaja Kopanja

Active

Ribes nigrum L. · Blackcurrant

Prof. Dr. V. P. Kopan c/o Institute of Horticulture

3 records

Irene

Active

Dianthus L. · Carnation

RAMBALDI FIORELLO

2 records

Jogranda

Terminated

Ribes x nidigrolaria Rud. Bauer et A. Bauer · Jostaberry

Rolf Bauer

2 records

Inia 66

Terminated

Triticum aestivum L. · Bread wheat

SARH-INIA

2 records

Jamajka

Active

Triticum aestivum L. · Bread wheat

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

4 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.