Diseases
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.
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.
Rosa L. · Rose
Stephens, Patrick N.|deceased, 139 Kihi Kihi Road, late of Te Awamutu, New Zealand by Patricia I. J. Stephens, legal representative, 139 Kihi Kihi Road, Te Awamutu, New Zealand
Dactylis glomerata L. · Cocksfoot
Plant Breeding International Cambridge Ltd (GB)
Solanum tuberosum L. · Potato
SOLANA SEEDS UNITED KINGDOM LTD. UNIT 4
Triticum aestivum L. · Bread wheat
Stacja Hodowli Roślin MODZURÓW Grupa Szelejewo sp. z o.o.
Phaseolus vulgaris L. · Common bean
Pop Vriend, NL
Ribes nigrum L. · Blackcurrant
Research Institute of Horticulture (Instytut Ogrodnictwa) / Research Institute of Horticulture (Instytut Ogrodnictwa)
Lolium perenne L. · Perennial ryegrass
GRASSLANDS DIVISION
Hordeum vulgare L. · Barley
Secobra, F
Festuca arundinacea Schreb. · Tall fescue
Lebanon Seaboard Corporation (US)
Triticum aestivum L. · Bread wheat
Serasem, FR
Hordeum vulgare L. · Barley
SAS FLORIMOND DESPREZ VEUVE and FILS
Poa pratensis L. · Kentucky bluegrass
J.R. Simplot Company d/b/a Jac
Poa pratensis L. · Kentucky bluegrass
DLF-Seeds A/S
Triticum aestivum L. · Bread wheat
Serasem S.A.S.
Helianthus annuus L. · Sunflower
MAY-AGRO SEED CORPORATION
Rosa L. · Rose
HANS JURGEN EVERS (T)
Festuca arundinacea Schreb. · Tall fescue
DLF SEEDS A/S
Lolium perenne L. · Perennial ryegrass
WRIGHTSON PAS S.A.
Rosa L. · Rose
Meilland International
Phaseolus vulgaris L. · Common bean
Syngenta Seeds
Lolium perenne L. · Perennial ryegrass
International Seeds Inc. (US)
Lolium perenne L. · Perennial ryegrass
DLF SEEDS A/S
Rubus L. subg. Rubus · Blackberry
John Reuben Clark, USA
Canna L. · Canna lily
Potgieter, Jan H.|P.O. Box 536, Bethal 2310, South Africa