Diseases
Brassica napus var. napus
A fungal disease of oilseed rape caused by Alternaria brassicae and Alternaria brassicicola species, affecting all aerial plant parts throughout the entire growing season.
In the reference 108 varieties crop Rapeseed, where this is mentioned in the description.
The primary pathogens of Alternaria blight on oilseed rape are the fungi Alternaria brassicae, which mainly cause grey leaf spot, and Alternaria brassicicola, which induce dark leaf spot. A. alternata, A. raphani, A. tenuissima, and A. arborescens may also be found in crops.
On leaves, the disease manifests as round or angular spots with a distinct halo, with A. brassicae often forming spots with a zonal "target-like" pattern. On stems and pods, sunken ulcerative lesions form, which become covered with a velvety layer of sporulation under humid conditions. Severe infection of pods leads to their premature shattering, known as the "trident" effect, resulting in shriveled seeds or their complete absence.
Specific monogenic resistance genes to this disease in oilseed rape have not been described to date. Resistance is considered a quantitative trait evaluated under field conditions, and the use of molecular markers is of an auxiliary nature for assessing overall genetic polymorphism.
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.
Brassica napus var. napus · Rapeseed
Breus Oksana Serhiivna, Davydiuk Ihor Mykolaiovych, Parii IUliia Oleksandrivna, Koval`chuk Zoreslava Volodymyrivna, Parii Myroslav Fedorovych, Parii IAroslav Fedorovych, Parii Fedir Mykytovych,
Brassica napus var. napus · Rapeseed
Brassica napus var. napus · Rapeseed
Brassica napus var. napus · Rapeseed
Brassica napus var. napus · Rapeseed
Brassica napus var. napus · Rapeseed
Brassica napus var. napus · Rapeseed
Brassica napus var. napus · Rapeseed
Brassica napus var. napus · Rapeseed
Brassica napus var. napus · Rapeseed
Ministry of Agriculture
Brassica napus var. napus · Rapeseed
Oliinyk IEvheniia Ivanivna, Boiko IEvheniia Illivna, Moroz Viktor Mykolaiovych,
Brassica napus var. napus · Rapeseed
Jean-Claude Pruvot
Brassica napus var. napus · Rapeseed
SYNGENTA SEEDS AG, CH
Brassica napus var. napus · Rapeseed
Vyshnevs`kyi Serhii Pavlovych, Liudva Valentyna Volodymyrivna, Romanenko Mykola Maksymovych, Korniichuk Oleksandr Vasylovych, Vyshnevs`kyi Pavlo Ivanovych,
Brassica napus var. napus · Rapeseed
SARL ADRIEN MOMONT ET FILS, FR
Brassica napus var. napus · Rapeseed
Breus Oksana Serhiivna, Parii IUliia Oleksandrivna, Sydorov Andrii Valeriiovych, Parii IAroslav Fedorovych, Parii Myroslav Fedorovych,
Brassica napus var. napus · Rapeseed
Kalinichenko Artem Oleksandrovych, Didenko Kostiantyn Oleksandrovych,
Brassica napus var. napus · Rapeseed
Brassica napus var. napus · Rapeseed
Brassica napus var. napus · Rapeseed
Brassica napus var. napus · Rapeseed