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.

Minerva

Active

Triticum aestivum L. · Bread wheat

ISEA S.R.L

4 records

Mv Kucsma

Terminated

Triticum aestivum L. · Bread wheat

Bedoe Zoltan / Lang Laszlo / Balla Laszlo / Szunics Laszlo / Karsai Ildiko / Szunics Laszlone / Veisz Otto / Vida Gyula

4 records

Meryl

Terminated

Lolium multiflorum Lam. · Italian ryegrass

ILVO PLANT(APPLIED GENETICS+BREEDING)

4 records

Mervana

Active

Lolium multiflorum Lam. · Italian ryegrass

DEPT FOR PLANT BREEDING and GENETICS -ILVO

4 records

Mieta

Terminated

Agrostis gigantea Roth · Black bent

Danko Hodowla Roslin Sp.z.o.o.

4 records

Melstella

Active

Lolium perenne L. · Perennial ryegrass

ILVO-PLANT 39

3 records

Moonstone

Active

Phaseolus vulgaris L. · Common bean

Pop Vriend Research B.V.

4 records

Melcamry

Active

Lolium x hybridum Hausskn. · Hybrid ryegrass

ILVO - Plant Toegepaste (BE)

3 records

Mirus

Protection expired

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

ZKI, H

3 records

Meilavio

Active

Rosa L. · Rose

Meilland, Alain A.|Antibes, France

3 records

Melromi

Active

Lolium perenne L. · Perennial ryegrass

ILVO-PLANT 39

3 records

Mochina 5

Active

Hordeum vulgare L. · Barley

SEMILLAS BATLLE, S.A.

4 records

Mistral

Terminated

Helianthus annuus L. · Sunflower

ISEA S.P.A.

3 records

Minosse

Active

Triticum durum Desf. · Durum wheat

MALIANI GENETICA SRL UNIPERSONALE

3 records

Maximus

Active

Lolium multiflorum Lam. · Italian ryegrass

Saatzucht Steinach GmbH & Co KG

3 records

Marlau

Active

Allium schoenoprasum L. · Chives

Rijk Zwaan Zaadteelt en Zaadhandel B.V.

3 records

Minos

Active

Triticum durum Desf. · Durum wheat

Monsanto Agricultura España S.L.U.

4 records

Marvex OL

Terminated

Helianthus annuus L. · Sunflower

MAS SEEDS

3 records

Merulaxe

Active

Lolium x hybridum Hausskn. · Hybrid ryegrass

GIE GRASS (FR)

4 records

Merilyn

Terminated

Hordeum vulgare L. · Barley

DEUTSCHE SAATVEREDELUNG AG

4 records

Melkana

Active

Lolium perenne L. · Perennial ryegrass

ILVO Plant

4 records

Mandolin

Active

Spinacia oleracea L. · Spinach

Pop Vriend Research B.V.

3 records

Melpico

Terminated

Lolium perenne L. · Perennial ryegrass

ILVO-PLANT 39

3 records

Merseval

Active

Lolium perenne L. · Perennial ryegrass

ILVO-PLANT 39

3 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

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.