Diseases
Helianthus annuus L.
A fungal disease of sunflower caused by Phoma macdonaldii (Leptosphaeria lindquistii), affecting all vegetative organs and flower heads. It is characterized by the appearance of necrotic spots, which on stems take on a distinctive blue-black color with a metallic sheen.
In the reference 479 varieties crop Sunflower, where this is mentioned in the description.
The pathogen of the disease is the fungus Phoma macdonaldii, which also has an ascomycete stage of development, Leptosphaeria lindquistii. Symptoms appear on leaves at the 3–4 pair of true leaves stage as brown spots with a yellow margin, which spread to the stem through the petioles. At the points of petiole attachment, large dark brown or blue-black necroses occur, which can girdle the stem and lead to a loss of tissue integrity.
Infection of the flower heads manifests as the appearance of brown spots on their dorsal side, which leads to the formation of shriveled seeds or their complete underdevelopment. In sunflower breeding, there are no lines with complete genetic resistance to the pathogen, so work is carried out exclusively in the direction of selecting tolerant hybrids based on the evaluation of their phenotypic response under conditions of natural or artificial inoculation.
General information about the subject — on the page Phoma rot.
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
Radic Velimir, Gvozdenovic Sandra, Jocic Sinisa,
Helianthus annuus L. · Sunflower
Dusanic Nenad, Miklic Vladimir, Miladinovic Dragana, Malidza Goran, Cvejic Sandra, Jocic Sinisa,
Helianthus annuus L. · Sunflower
Miclic Vladimir, Gvozdenovic Sandra, Jocic Sinisa,
Helianthus annuus L. · Sunflower
Miklic Vladimir, Dusanic Nenad, Malidza Goran, Cvejic Sandra, Jocic Sinisa,
Helianthus annuus L. · Sunflower
Mykhno Mykola Viacheslavovych
Helianthus annuus L. · Sunflower
prof.Nina Nenova
Helianthus annuus L. · Sunflower
Kyrychenko Maryna Serhiivna, Babych Viktoriia Olehivna, Parii Myroslav Fedorovych, Parii IAroslav Fedorovych,
Helianthus annuus L. · Sunflower
Annabelle RABLAT
Helianthus annuus L. · Sunflower
Kyrychenko Maryna Serhiivna, Babych Viktoriia Olehivna, Parii Fedir Mykytovych, Parii Myroslav Fedorovych, Parii IAroslav Fedorovych,
Helianthus annuus L. · Sunflower
KWS SAAT SE & CO.KGAA
Helianthus annuus L. · Sunflower
Stepanov IEvhenii Olehovych, Parii IUliia Oleksandrivna, Parii Myroslav Fedorovych, Parii IAroslav Fedorovych, Parii Fedir Mykytovych,
Helianthus annuus L. · Sunflower
Stepanov IEvhenii Olehovych, Parii IUliia Oleksandrivna, Parii Myroslav Fedorovych, Parii IAroslav Fedorovych, Parii Fedir Mykytovych,
Helianthus annuus L. · Sunflower
Dobroudja Agricultural Institute - General Toshevo (BG)
Helianthus annuus L. · Sunflower
prof.Galin Georgiev, prof.Aleksandar Piskov,prof.Valentina Encheva
Helianthus annuus L. · Sunflower
Cvejic Sandra, Jocic Sinisa,
Helianthus annuus L. · Sunflower
Cvejic Sandra, Jocic Sinisa,
Helianthus annuus L. · Sunflower
Kalinichenko Artem Oleksandrovych, Didenko Kostiantyn Oleksandrovych,
Helianthus annuus L. · Sunflower
Stupak Iryna IUriivna, Rusavskyi Vladyslav Leonidovych, Olkhovyk Maksym Stanislavovych, Kruhlova Marharyta Olehivna, Haidash Oleksandr Leonidovych, Bernadskyi Maksym Mykhailovych, Cherchel Vladyslav IUriiovych,
Helianthus annuus L. · Sunflower
EURALIS GENETIQUE
Helianthus annuus L. · Sunflower
Kyrychenko Maryna Serhiivna, Babych Viktoriia Olehivna, Parii Fedir Mykytovych, Parii Myroslav Fedorovych, Parii IAroslav Fedorovych,
Helianthus annuus L. · Sunflower
Helianthus annuus L. · Sunflower
EURALIS SEMILLAS, S.A.
Helianthus annuus L. · Sunflower
Frederic Poujaud
Helianthus annuus L. · Sunflower
Euralis Semences