Abstract
The purpose of the work was to develop forms of confectionary sunflower resistant to broomrape race G on artificial infection background both in fields and greenhouses and artificial climate chambers. The researches were conducted in V.S. Pustovoit All-Russian Research Institute of Oil Crops, Krasnodar, Russia, in 2019–2021. A line RG (Or7) was used as a donor of gen of resistance to broomrape race G. The confectionary sunflower variety SPK plus was a recipient. Using methods of hybridization, back-crosses and group interpollination, on severe infection background, a sunflower population resistant to the aggressive broomrape race was develop for the further breeding of confectionary sunflower varieties. These methods allowed increasing resistance step-by-step while maintaining high polymorphism that makes it possible to continue breeding of confectionary sunflower varieties for the further rise of productivity.
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