Diseases
Helianthus annuus L.
A fungal disease caused by the autoecious obligate parasite Puccinia helianthi. The disease affects the vegetative organs of the plant throughout the entire growing season, leading to a reduction in oil content by up to 15% and yield losses of up to 45%.
In the reference 362 varieties crop Sunflower, where this is mentioned in the description.
The pathogen completes its full life cycle exclusively on sunflower. Symptoms appear as light green spots with pycnidia on the upper side of the leaf, orange aecia on the lower side, followed by the development of rusty-brown urediniopustules. By the end of the growing season, dark teliospores form within the pustules, ensuring the pathogen's overwintering.
Puccinia helianthi populations are characterized by high variability. A set of differential lines, such as SM 90, SM 29, P-386, and HA-R1–R5, is used to identify physiological races. In Russia, the presence of both old and aggressive new races is noted, including 700, 710, 722, and 772.
Crop resistance is determined by dominant genes, among which R1 and Radv are known. In total, about 19 resistance genes have been described; however, many of them are losing their effectiveness due to the constant evolution of the pathogen. Breeding is aimed at the introgression of new genes, for which molecular markers are used to monitor them.
General information about the subject — on the page Rust.
Selection based on the description text, not on official evaluation: these data are absent from registers. For specific variety details, please refer to its profile.
Helianthus annuus L. · Sunflower
Helianthus annuus L. · Sunflower
RUSTICA SEMENCES
Helianthus annuus L. · Sunflower
JOSE RAMON PEREZ MONREAL
Helianthus annuus L. · Sunflower
Pioneer Hi-Bred International Inc (US)
Helianthus annuus L. · Sunflower
Rustica Prograin Genetique SA (FR)
Helianthus annuus L. · Sunflower
Steve Thompson
Helianthus annuus L. · Sunflower
SYNGENTA FRANCE S.A.S.
Helianthus annuus L. · Sunflower
SINISA JOCIC / SANDRA CVEJIC / GORAN MALIDZA / VLADIMIR MIKLIC / NENAD DUSANIC / DRAGANA MILADINOVIC
Helianthus annuus L. · Sunflower
ISEA S.P.A.
Helianthus annuus L. · Sunflower
MAS SEEDS
Helianthus annuus L. · Sunflower
Syngenta Crop Protection AG
Helianthus annuus L. · Sunflower
LIMAGRAIN EUROPE S.A.
Helianthus annuus L. · Sunflower
LIMAGRAIN EUROPE S.A.
Helianthus annuus L. · Sunflower
EURALIS SEMILLAS, S.A.
Helianthus annuus L. · Sunflower
Syngenta Seeds
Helianthus annuus L. · Sunflower
Neno Nenov
Helianthus annuus L. · Sunflower
CST(CLUB SELECT.TOURNESOL
Helianthus annuus L. · Sunflower
APEX SARL
Helianthus annuus L. · Sunflower
JOITA-PACUREANU MARIASTANCIU DANILSTANCIU MARIAANTON FLORIN GABRIEL
Helianthus annuus L. · Sunflower
Didier Sauvaire
Helianthus annuus L. · Sunflower
Euralis Semences
Helianthus annuus L. · Sunflower
LIMAGRAIN EUROPE S.A.
Helianthus annuus L. · Sunflower
SEMILLAS BATLLE S.A.
Helianthus annuus L. · Sunflower
Cvejic Sandra, Jocic Sinisa,