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.

Merlin

Active

x Festulolium Aschers. et Graebn. · Festulolium

INIA-La Estanzuela

6 records

Maral

Active

Trifolium resupinatum L. · Persian clover

Instituto Nacional de Investigação Agrária (INIA) -Portugal-, Instituto Nacional de Recursos Biológicos (INRB) -Portugal-

7 records

Lightning

Active

Trifolium resupinatum L. · Persian clover

SOUTH AUSTRALIAN SEED GROWERS CO-OPERATIVE LTD

9 records

Likoloss

Active

Lolium multiflorum Lam. · Italian ryegrass

Euro Grass Breeding GmbH Co. KG

9 records

Karma

Active

Lolium perenne L. · Perennial ryegrass

Pickseed USA, Inc. & Rutgers, The State University of New Jersey

6 records

Julie

Active

Triticum aestivum L. · Bread wheat

Selgen, CZ

10 records

Kiowa

Active

Festuca arundinacea Schreb. · Tall fescue

RAGT 2N S.A.S

8 records

Figaro

Active

Solanum tuberosum L. · Potato

Solana, D

10 records

Dorike

Active

Lolium multiflorum Lam. · Italian ryegrass

Euro Grass Breeding GmbH Co. KG

9 records

Cipria

Active

Vaccinium corymbosum L. · Highbush blueberry

The New Zealand Institute for Plant and Food Research Limited, The New Zealand Institute for Plant and Food Research Limited

8 records

Covina

Active

Brassica oleracea L. (Broccoli Group) · Broccoli

Bejo Zaden, NL

7 records

Bellinda

Active

Solanum tuberosum L. · Potato

Heinrich Böhm

9 records

Bandalore

Active

Lolium perenne L. · Perennial ryegrass

DLF SEEDS A/S

6 records

Audubon

Active

Festuca rubra L. · Red fescue

JACKLIN SEED

6 records

Walcoreop

Active

Coreopsis grandiflora Hogg ex Sweet · Large-flowered tickseed

Tristram, David Ralph|Walberton Nursey, Yapton Lane, Walberton, Arundel, West Sussex,, England, BN18 0AS

6 records

Meiswetdom

Active

Rosa L. · Rose

Meilland International

6 records

Galaxy

Active

Avena sativa L. · Oat

NORDSAAT SAATZUCHT

DE EE LT LV

9 records

ES Rosalia

Active

Helianthus annuus L. · Sunflower

Euralis Semences FR

FR RO UA

8 records

Rambo

Active

Avena sativa L. · Oat

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

AT CZ DK LT PL

8 records

LG Abrazo

Active

Triticum aestivum L. · Bread wheat

Pierrick Varenne

BG ES FR UA

8 records

WPB Calgary

Active

Triticum aestivum L. · Bread wheat

Wiersum Plantbreeding B.V.

AT NL PL

7 records

Rudy

Terminated

Avena sativa L. · Oat

NORDSAAT SAATZUCHT

DK EE LT LV SE

7 records

Simeto

Active

Triticum durum Desf. · Durum wheat

STAZIONE CONSORZIALE SPERIMENTALE DI GRANICOLTURA PER LA SICILIA

ES FR IT MT

7 records

Zentos

Active

Triticum aestivum L. · Bread wheat

Syngenta Hadmersleben

DK LT LV

8 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.