Méthéor
TerminatedHelianthus annuus L. · Sunflower
Mais Angevin (FR)
FR
3 records
Diseases
Downy mildew of sunflower
Helianthus annuus L.
A systemic disease of sunflower caused by the oomycete Plasmopara halstedii, which persists in the soil for up to 8 years and infects the plant through the root system.
In the reference 905 varieties crop Sunflower, where this is mentioned in the description.
The pathogen Plasmopara halstedii is capable of forming more than 30 races, of which 330, 334, 710, and 730 are the most common in Russia. The pathogen penetrates the plant at early growth stages, causing stunting, chlorotic spots along the leaf veins, and the appearance of white felt-like mycelium on the underside of the leaves. The disease can lead to underdeveloped flower heads and empty achenes.
Up to six forms of infection manifestation are distinguished, ranging from early seedling death to latent infection, the symptoms of which only become visible by the flowering stage. In breeding for resistance to the pathogen, Pl genes are used (e.g., Pl6, Pl8, Plarg, Pl5+). Since the pathogen mutates actively, the most effective method of control is the development of genotypes with a combination of these genes to provide protection against a broad spectrum of races.
General information about the subject — on the page Downy mildew.
Varieties of Sunflower mentioned in the description
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.
Lucas
TerminatedHelianthus annuus L. · Sunflower
Syngenta Crop Protection AG
IT
3 records
LG50777
ActiveHelianthus annuus L. · Sunflower
LIMAGRAIN EUROPE S.A.
IT
3 records
LG 5385 PR
ActiveHelianthus annuus L. · Sunflower
HU
3 records
Kruiz
ActiveHelianthus annuus L. · Sunflower
Surovikin Volodymyr Mykolaiovych, Sliusar Emiliia L`vivna, Soldatov Karm Ivanovych, Detsina Oleksandr Oleksandrovych, Ilatovs`kyi Volodymyr Platonovych, Borodin Serhii Heorhiiovych,
UA
4 records
Kadiz
TerminatedHelianthus annuus L. · Sunflower
Syngenta Seeds
IT
3 records
Hysun 310 SU
ActiveHelianthus annuus L. · Sunflower
Neno Nenov
UA
4 records
Hussar
ActiveHelianthus annuus L. · Sunflower
Prograin Genetique (FR)
FR
3 records
HA-26-OR
ActiveHelianthus annuus L. · Sunflower
UA
5 records
Griffon
ActiveHelianthus annuus L. · Sunflower
CST(CLUB SELECT.TOURNESOL
ES
4 records
HA-26
ActiveHelianthus annuus L. · Sunflower
UA
5 records
GK. 70
ActiveHelianthus annuus L. · Sunflower
HU
3 records
Friuli
TerminatedHelianthus annuus L. · Sunflower
Universita Degli Studi Di Udine
IT
3 records
FD21CL77
ActiveHelianthus annuus L. · Sunflower
JOITA-PACUREANU MARIASTANCIU DANILSTANCIU MARIAANTON FLORIN GABRIEL
RO
4 records
FD15E27
ActiveHelianthus annuus L. · Sunflower
PACUREANU JOITA MARIASTANCIU DANILSTANCIU MARIA
RO
4 records
ES ARCADIA SU
ActiveHelianthus annuus L. · Sunflower
Didier Sauvaire
UA
5 records
FD21E45
ActiveHelianthus annuus L. · Sunflower
JOITA-PACUREANU MARIASTANCIU DANILSTANCIU MARIAANTON FLORIN GABRIEL
RO
4 records
Falcon
ActiveHelianthus annuus L. · Sunflower
TRIUMPH SEED CO.
ES
6 records
Elsasun IR
ActiveHelianthus annuus L. · Sunflower
Elena Andreea Teodorescu
UA
4 records
Drofa
ActiveHelianthus annuus L. · Sunflower
ROTARU TUDOR GRIGOR'EVICh / ANAShchENKO ALEKSANDR VIKTOROVICh / ROTARU IGOR' FEDOROVICh / KETRAR ELENA NIKOLAEVNA
UA
4 records
Crono
TerminatedHelianthus annuus L. · Sunflower
CREA- CENTRO DI RICERCA PER LE COLTURE INDUSTRIALI (CREA-CI-BO)
IT
3 records
Dalena CLP
TerminatedHelianthus annuus L. · Sunflower
prof.Nina Nenova,prof.Galin Georgiev, prof.Valentina Encheva
BG
4 records
Bonasol
ActiveHelianthus annuus L. · Sunflower
SEMILLAS BATLLE S.A.
IT
3 records
Bonoli
ActiveHelianthus annuus L. · Sunflower
SEMILLAS BATLLE S.A.
IT
4 records