RHA 46
TerminatedHelianthus annuus L. · Sunflower
PACIFICO
ES
1 record
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.
Ramires
ActiveHelianthus annuus L. · Sunflower
Tovarystvo z obmezhenoiu vidpovidalnistiu «TK ART-AHRO»
UA
2 records
RA1001735
ActiveHelianthus annuus L. · Sunflower
RAGT 2N S.A.S
IT
1 record
PRS 5
TerminatedHelianthus annuus L. · Sunflower
INSTITUT NATIONAL DE LA RECHERCHE AGRONOMIQUE, FR
FR
1 record
Pronto OR7
ActiveHelianthus annuus L. · Sunflower
Skakunenko, Vladyslava
UA
2 records
PR 56
WithdrawnHelianthus annuus L. · Sunflower
INSTITUT NATIONAL DE LA RECHERCHE AGRONOMIQUE, FR
FR
1 record
PHA 133
TerminatedHelianthus annuus L. · Sunflower
Pioneer Hi-Bred International Inc (US)
FR
1 record
Pervistok
TerminatedHelianthus annuus L. · Sunflower
Levchenko Valentyna Ivanivna, Shuhurova Nataliia Oleksiivna, Odynets` Serhii Ivanovych, Sereda Valentyna Oleksiivna, Shudria Larysa Ivanivna, Kutischeva Nataliia Mykolaivna,
UA
2 records
Pikardiia KLP
TerminatedHelianthus annuus L. · Sunflower
Pryvatne Pidpryiemstvo "NASINNEVE"
UA
2 records
PHA 132
WithdrawnHelianthus annuus L. · Sunflower
Pioneer Hi-Bred International Inc (US)
FR
1 record
PHA119
TerminatedHelianthus annuus L. · Sunflower
PIONEER HI-BRED INTERNATIONAL
ES
1 record
Paraizo 1000 KL Plius
TerminatedHelianthus annuus L. · Sunflower
Amelia Bertero
UA
1 record
PAC 2
TerminatedHelianthus annuus L. · Sunflower
INSTITUT NATIONAL DE LA RECHERCHE AGRONOMIQUE, FR
FR
1 record
Pehas
TerminatedHelianthus annuus L. · Sunflower
Avramenko Oleksandr Oleksandrovych , Scherban` Nataliia Fedorivna, Scherban` Serhii Vasyl`ovych,
UA
1 record
P64ВВ400
ActiveHelianthus annuus L. · Sunflower
Antoine Mezzarobba
UA
1 record
Od 1002 A
ActiveHelianthus annuus L. · Sunflower
Karapira Serhii Ivanovych, Varenyk Borys Fedorovych,
UA
2 records
NX81229
ActiveHelianthus annuus L. · Sunflower
Syngenta participation AG
IT
1 record
MS 2077A
Application submittedHelianthus annuus L. · Sunflower
SEEDECO Semences SRL (MD)
BG
1 record
NKAlegro
WithdrawnHelianthus annuus L. · Sunflower
Syngenta Crop Protection AG, Seeds Division, CH
HR
1 record
Monarkh
Application submittedHelianthus annuus L. · Sunflower
Mandrov, Al`bert
UA
2 records
Nabaro
ActiveHelianthus annuus L. · Sunflower
Kapustian Maryna Viktorivna, Kapustian Volodymyr Vasylovych,
UA
2 records
MDS1024HC
Application submittedHelianthus annuus L. · Sunflower
MAS SEEDS
IT
1 record
Merkuriy
TerminatedHelianthus annuus L. · Sunflower
N. Nenov, Y. Simeonova-Stoyanova, P. Shindrova, P. Petrov, V. Velkov, A. Piskov, D. Petakov, L. Nikolova, M. Hristov, V. Encheva, F. Tsvetkova, V. Venkov
BG
1 record
M94K07
WithdrawnHelianthus annuus L. · Sunflower
Mehmet Ali Keceli
UA
2 records