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.
Zea mays L. subsp. mays (Sweet Corn Group) · Sweet corn
Sergio Nieto
x Triticosecale Wittm. ex A. Camus · Triticale
Florimond Desprez
Helianthus annuus L. · Sunflower
Euralis Semences
Helianthus annuus L. · Sunflower
Didier Sauvaire
Triticum aestivum L. · Bread wheat
Ihnatovskyi Oleksandr Oleksandrovych, Khodakova Tetiana Mykolaivna, Reshetnikova Valentyna Semenivna, Aleksieienko IEvhenii Viktorovych, Honcharuk Nina Oleksandrivna, Lytvynenko Raisa Ivanivna, Holub IEvheniia Anatoliivna, Lytvynenko Mykola Antonovych,
Chrysanthemum x morifolium Ramat. · Florist's daisy
PARATY B.V.B.A
Triticum aestivum L. · Bread wheat
Florimond Desprez
Triticum aestivum L. subsp. aestivum · Bread wheat
Kärntner Saatbau e.Gen.
Hordeum vulgare L. · Barley
INNOSEEDS
Triticum aestivum L. · Bread wheat
Olsson, Gösta
Zea mays L. · Maize
Kalinichenko Artem Oleksandrovych, Didenko Kostiantyn Oleksandrovych,
Rosa L. · Rose
WERNER NOACK
Festuca arundinacea Schreb. · Tall fescue
Timothy M. Ford, Pineview Farms, LLC
Triticum aestivum L. · Bread wheat
NEW SOUTH WALES, DEP.AGR.
Triticum aestivum L. · Bread wheat
SECOBRA RECHERCHES S.A.S
Triticum aestivum L. · Bread wheat
Poznanska Hodowla Roslin Sp. z o.o
Rosa x damascena Mill. · Damask rose
Raycho Raev
Brassica juncea (L.) Czern. · Brown mustard
GUILLEMAN PAUL (FR)
Triticum durum Desf. · Durum wheat
Washington State University Research Foundation (US)
Helianthus annuus L. · Sunflower
EURALIS SEMILLAS, S.A.
Helianthus annuus L. · Sunflower
Euralis Semences, Mondonville FR
Helianthus annuus L. · Sunflower
Euralis Semences
Zea mays L. · Maize
Zakorchmennyi, Viktor
Solanum tuberosum L. · Potato
Instytut kartopliarstva Natsionalnoi akademii ahrarnykh nauk Ukrainy