Annual wild and perennial sunflower species are used in sunflower breeding programs for resistance to various biotic and abiotic factors. For increase the variability inside sunflower must use this species who represent a ...

In south-east of Romania is present the most dangerous races of parasite Orobanche cumana and because of that, who want to cultivated sunflower hybrids, has low seed yield do to broomrape attack. In year 2019, in Braila ...