Diseases
Helianthus annuus L.
A fungal disease of sunflower caused by a complex of imperfect fungi of the genus Alternaria, characterized by the infection of all above-ground plant organs throughout the growing season.
In the reference 61 varieties crop Sunflower, where this is mentioned in the description.
The primary pathogen of the disease is the specialized species Alternaria helianthi, although the pathogenic complex also includes the species Alternaria alternata, A. tenuissima, A. helianthiinficiens, A. zinniae, A. arborescens, and species of the A. infectoria group. The disease manifests on cotyledons as round yellow spots, on leaves as spotting with a yellow halo leading to necrosis, and on stems and flower heads in the form of dark streaks and spots, which disrupt seed nutrition.
In humid conditions, a characteristic olive-velvety bloom of fungal sporulation develops on the affected areas. Specific monogenic loci for resistance to the pathogen have not been identified in the crop; therefore, breeding for immunity is based primarily on interspecific hybridization methods with wild Helianthus species to achieve field resistance.
General information about the subject — on the page Alternaria blight.
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
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
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
Helianthus annuus L. · Sunflower
Tovarystvo z obmezhenoiu vidpovidalnistiu "Ahronasinniaprom"
Helianthus annuus L. · Sunflower
Posunko Anton Olehovych, Shatsman Dmytro Oleksandrovych,
Helianthus annuus L. · Sunflower
Posunko Anton Olehovych, Bushulian Oleh Volodymyrovych, Shatsman Dmytro Oleksandrovych,
Helianthus annuus L. · Sunflower
Tovarystvo z obmezhenoiu vidpovidalnistiu «IEvrosem»
Helianthus annuus L. · Sunflower
Avramenko Oleksandr Oleksandrovych , Scherban` Nataliia Fedorivna, Scherban` Serhii Vasyl`ovych,
Helianthus annuus L. · Sunflower
Koval`ov Volodymyr Hryhorovych, Zaitsev Oleksii Borysovych,
Helianthus annuus L. · Sunflower
Brahin Oleksandr Mykolaiovych, Veselyi Vitalii Oleksandrovych, Kuzmysheva Nadiia Viktorivna, Syvenko Valentyna Ivanivna, Kolomatska Valeriia Pavlivna, Makliak Kateryna Mykolaivna, Kyrychenko Viktor Vasylovych,
Helianthus annuus L. · Sunflower
Kopylov Serhii Ihorovych
Helianthus annuus L. · Sunflower
David Mogford
Helianthus annuus L. · Sunflower
Dobroudja Agricultural Institute - General Toshevo (BG)
Helianthus annuus L. · Sunflower
Miklic Vladimir Jocic Sinisa Dusanic NenadSandra Cvejic Milan Jockovic Zaitsev Oleksii Kovalov Volodymyr
Helianthus annuus L. · Sunflower
Goran Malidza, Sinisa Jocic, Dragan Skoric,
Helianthus annuus L. · Sunflower
Dushanich Nened, Shkorych Drahan, Zaitsev Oleksii Borysovych,
Helianthus annuus L. · Sunflower
Didier Sauvaire
Helianthus annuus L. · Sunflower
Shkorich Dragan, Zaitsev Oleksii Borysovych,
Helianthus annuus L. · Sunflower
A. Piskov, P. Ivanov, I. Ivanova, P. Petrov, P. Shindrova, M. Hristov, D. Petakov, V. Encheva, L. Nikolova, G. Georgiev
Helianthus annuus L. · Sunflower
Poljoprivredni Institut Osijek, HR
Helianthus annuus L. · Sunflower