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.

Kerstin

Active

Hordeum vulgare L. · Barley

Nordsaat Saatzuchtgesellschaft mbH

AT DE EE FR LT PL

14 records

JB Flavour

Active

Hordeum vulgare L. · Barley

Saatzucht Josef Breun GdbR (DE)

CZ DE DK EE FR LT

14 records

Ingmar

Protection expired

Hordeum vulgare L. · Barley

Nordsaat Saatzucht GmbH Saatzucht Langenstein

DE DK FI LT PL UA

15 records

Amarena

Active

Hordeum vulgare L. · Barley

SAATEN UNION RECHERCHE

CZ DE FR LT PL UA

14 records

Athlon

Active

Triticum aestivum L. · Bread wheat

Volker Lein

EE FR HU LT UA

15 records

Rumor

Active

Triticum aestivum L. · Bread wheat

Strube Research GmbH & Co. KG, D- 38387 Sollingen

DK LT UA

12 records

Riparo

Active

x Triticosecale Wittm. ex A. Camus · Triticale

SECOBRA RECHERCHES S.A.S

AT CZ DE IT LU

15 records

Ovambo 1

Active

Lolium perenne L. · Perennial ryegrass

DLF-Seeds A/S

AT BE DE NL PL

16 records

Ridu

Active

Festuca ovina L. · Sheep's fescue

DLF-Trifolium (DK)

HR HU PL RO SI

13 records

KWS Emil

Active

Triticum aestivum L. · Bread wheat

KWS Lochow

EE LT LV UA

15 records

KWS Donau

Active

Hordeum vulgare L. · Barley

KWS Lochow, D

AT CZ DE RO UA

17 records

Masai

Active

Phaseolus vulgaris L. · Common bean

VELDHUYZEN VAN ZANTEN JASPER ENGEL

FR HU IT NL PL

12 records

Belida

Active

Lolium perenne L. · Perennial ryegrass

PRODANA SEED A/S

DK EE ES FR SK

13 records

Arabella

Active

Triticum aestivum L. · Bread wheat

Danko Hodowla Roslin Sp.z.o.o.

EE LT LV PL UA

16 records

SU Agendus

Active

x Triticosecale Wittm. ex A. Camus · Triticale

Nordsaat Saatzucht, D

DE HU LT PL

12 records

Nogal

Active

Triticum aestivum L. · Bread wheat

SAS FLORIMOND-DESPREZ Veuve et Fils

ES HR IT RO

19 records

Basilio

Active

Triticum aestivum L. · Bread wheat

SAS FLORIMOND-DESPREZ Veuve et Fils

ES HR HU UA

19 records

Valentino

Active

Phaseolus vulgaris L. · Common bean

Seminis Vegetable Seeds

11 records

Adamo

Active

Avena sativa L. · Oat

Wouda, K.P.

BE DE DK ES FR NL +1

15 records

Sofru

Active

Triticum aestivum L. · Bread wheat

Pierre GARRAUD

FR HR HU IT UA

16 records

Semper

Active

Hordeum vulgare L. · Barley

KWS Lochow

AT CZ DE EE HU PL

14 records

Faustus

Active

Triticum aestivum L. · Bread wheat

Strube, D

BE FR HU LT UA

16 records

KWS Tenor

Active

Hordeum vulgare L. · Barley

KWS Lochow

CZ DE EE HU SK UA

16 records

Harmony

Active

Avena sativa L. · Oat

Nordsaat Saatzuchtgesellschaft m.b.H. (DE)

DE EE FI FR LT LU

13 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.