Diseases
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.
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
Kryvosheieva Olena Vatslavivna, Brahin Oleksandr Mykolaiovych, Veselyi Vitalii Oleksandrovych, Kuzmyshena Nadiia Viktorivna, Syvenko Valentyna Ivanivna, Makliak Kateryna Mykolaivna, Alad`ina Zoia Kyrylivna, Kyrychenko Viktor Vasyl`ovych,
Helianthus annuus L. · Sunflower
Terzic Sreten, Radeka Ilija, Jockovic Milan, Cvejic Sandra, Jocic Sinisa,
Helianthus annuus L. · Sunflower
Dusanic Nenad, Miklic Vladimir, Malidza Goran, Cvejic Sandra, Jocic Sinisa,
Helianthus annuus L. · Sunflower
Dusanic Nenad, Miladinovic Dragana, Cvejic Sandra, Cvejic Sandra, Jocic Sinisa,
Helianthus annuus L. · Sunflower
Miklic Vladimir, Dusanic Nenad, Malidza Goran, Cvejic Sandra, Jocic Sinisa,
Helianthus annuus L. · Sunflower
Miladinovic Dragana, Miklic Vladimir, Dusanic Nenad, Balalic Igor, Cvejic Sandra, Jocic Sinisa,
Helianthus annuus L. · Sunflower
Pankovic Dejana, Gvozdenovic Sandra, Jocsc Sinisa,
Helianthus annuus L. · Sunflower
Ovuka Jelena, Dimitrijevic Aleksandra, Radeka Ilija, Jockovic Milan, Jocic Sinisa, Cvejic Sandra,
Helianthus annuus L. · Sunflower
Dedic Bosko, Imerovski Ivana, Miladinovic Dragana, Cvejic Sandra, Jocic Sinisa,
Helianthus annuus L. · Sunflower
Cvejic, Sandra Dusanic, Nenad Jockovic, Milan Miklic, Vladimir Mykhno, Mykola Jocic, Sinisa
Helianthus annuus L. · Sunflower
KOSOLAPOV SERGEJ NIKOLAEVICh / KOYuDA SERGEJ PETROVICh / DOROGOBED ALEKSEJ ALEKSEEVICh
Helianthus annuus L. · Sunflower
LIMAGRAIN EUROPE S.A.
Helianthus annuus L. · Sunflower
KARPENKO OLEKSANDR, LUKIANCHYK IURII
Helianthus annuus L. · Sunflower
Karapira Serhii Ivanovych, Babich Valerii Ivanovych, Hanzhelo Mykola Hryhorovych, Krut`ko Vasyl` Ivanovych, Varenyk Borys Fedorovych, Veselyi Vitalii Oleksandrovych, Syvenko Valentyna Ivanivna, Kolomatska Valeriia Pavlivna, Makliak Kateryna Mykolaivna,
Helianthus annuus L. · Sunflower
Euralis Semences FR
Helianthus annuus L. · Sunflower
EURALIS SEMILLAS, S.A.
Helianthus annuus L. · Sunflower
MIHSAN Ltd - Sofia (BG)
Helianthus annuus L. · Sunflower
VELI PEKCAN, TAHIR GUCER, GOKSEL EVCI, YALCIN KAYA, IBRAHIM YILMAZ
Helianthus annuus L. · Sunflower
CECOSA
Helianthus annuus L. · Sunflower
Helianthus annuus L. · Sunflower
Helianthus annuus L. · Sunflower
Helianthus annuus L. · Sunflower
Helianthus annuus L. · Sunflower