Greenhouse and open-field testing methods for infection and virulence of broomrape (Orobanche cernua) in sunflower (Helianthus annuus). 7th International Weed science Congress, June 19-25. Prague, Czech Republic

The parasitic broomrape (Orobanche cernua) is one of the most yield-reducing factor of sunflower production world-widely as well as in Hungary.

Broomrape has many races, in Hungary the most sunflower cultivars resistant to common A-D races (OR4) and to the also frequent race E (OR5)…