Arakar
TerminatedHelianthus annuus L. · Sunflower
Burlov Viktor Vasylovych
UA
2 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.
Al`fa
TerminatedHelianthus annuus L. · Sunflower
Berestenko Serhii Leonidovych, Scherban` Serhii Vasyl`ovych, Scherban` Natalia Fedorivna,
UA
1 record
Alejo
WithdrawnHelianthus annuus L. · Sunflower
Rustica Prograin Genetique
IT
1 record
Airelle
TerminatedHelianthus annuus L. · Sunflower
INSTITUT NATIONAL DE LA RECHERCHE AGRONOMIQUE, FR
FR
2 records
Alanya
Application submittedHelianthus annuus L. · Sunflower
Tahir Gucer, Ibrahim Yilmaz, Veli Pekcan, Yalcin Kaya, Goksel Evci,
UA
2 records
8Kh449KLDM
TerminatedHelianthus annuus L. · Sunflower
Steve Thompson
UA
2 records
12003 R
TerminatedHelianthus annuus L. · Sunflower
Dobroudja Agricultural Institute - General Toshevo (BG)
BG
1 record
5038H
ActiveHelianthus annuus L. · Sunflower
Euralis Semences
IT
1 record
83HR4RM
TerminatedHelianthus annuus L. · Sunflower
INSTITUT NATIONAL DE LA RECHERCHE AGRONOMIQUE, FR
FR
1 record
1054L SU
ActiveHelianthus annuus L. · Sunflower
Euralis Semences
IT
1 record
100 B
TerminatedHelianthus annuus L. · Sunflower
S.I.G.C.O. RESEARCH Inc. (US)
FR
1 record
XF17953
ActiveHelianthus annuus L. · Sunflower
Hedvig Komjati
UA
1 record
Tur
Application submittedHelianthus annuus L. · Sunflower
Kutishceva, Nataliia Shcudria, Larysa Odynets, Serhii Sereda, Valentyna
UA
2 records
Talmaz CL
Application submittedHelianthus annuus L. · Sunflower
SEEDECO Semences SRL (MD)
BG
1 record
Solaris OR
ActiveHelianthus annuus L. · Sunflower
Miklic Vladimir Jocic Sinisa Dusanic NenadSandra Cvejic Milan Jockovic Zaitsev Oleksii Kovalov Volodymyr
UA
2 records
Sharan KLP
TerminatedHelianthus annuus L. · Sunflower
Reva IAroslav Mykolaiovych
UA
2 records
Savoi SU
ActiveHelianthus annuus L. · Sunflower
Pryvatne Pidpryiemstvo "NASINNEVE"
UA
2 records
Rimi-2/Rimi-2
ActiveHelianthus annuus L. · Sunflower
Goran Malidza, Sinisa Jocic, Dragan Skoric,
UA
2 records
Rona
ActiveHelianthus annuus L. · Sunflower
Reva IAroslav Mykolaiovych
UA
2 records
Radar RM
WithdrawnHelianthus annuus L. · Sunflower
EURALIS GENETIQUE
IT
1 record
Polit 2
TerminatedHelianthus annuus L. · Sunflower
Chekhov Anatolii Vasyl`ovych, Mischenko Liulmyla IUriivna, Lytovchenko Borys Kyrylovych, Pershyna Lilia Vasylivna, Shudria Larysa Ivanivna, Kutischeva Nataliia Mykolaivna,
UA
2 records
PHA185
TerminatedHelianthus annuus L. · Sunflower
PIONEER HI-BRED INTERNATIONAL
ES
1 record
NS-Kh-6316
ActiveHelianthus annuus L. · Sunflower
Dusanic Nenad, Miklik Vladimir, Jocic Sinisa, Hladni Nada,
UA
2 records
Obrion
ActiveHelianthus annuus L. · Sunflower
Reva IAroslav Mykolaiovych
UA
2 records