![]() cumana was distributed in the Guadalquivir Valley (Andalucía, Southern Spain) and Cuenca province (Castilla-La Mancha, Central Spain), but in recent years, it has spread to other areas of these both cultivation regions and new fields in other regions such as Castilla y León (Northern Spain). cernua L., which is an autochthonous species that only parasitizes wild Asteraceae hosts, Orobanche cumana is found in Spain as an allochthonous species parasitizing exclusively cultivated sunflower, in contrast to the closely related species O. cumana causes severe yield losses in sunflower crops. Orobanche cumana is present in sunflower crops in many countries around the world, especially in Central and Eastern Europe, Spain, Turkey, Israel, Russia, Ukraine, Iran, Kazakhstan, China, France and Tunisia. This species, known as sunflower broomrape, is also an important parasitic weed of sunflower (Helianthus annuus L.), where it was first observed parasitizing this crop in Russia in the 1890s. cumana, where this species is mainly found parasitizing Artemisia maritima L. ![]() The Black Sea coast in Eastern Bulgaria is one of the main natural distribution areas for O. is naturally distributed from Central Asia to Southeastern Europe, where it parasitizes wild Asteraceae species. only parasitize wild plants, some of them have become noxious weeds on a variable range of cultivated hosts. and Phelipanche spp.) are a group of around 170 holoparasitic plant species mainly distributed in the Northern Hemisphere.
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