Phoma pathogen on vegetating sunflower plants in Krasnodar region

The photoes showing the Phoma symtoms on sunflower leaves and stems are presented. The isolates of pathogen were isolated from vegetating sunflower plants in 2012-2013. A fungus was isolated in affected samples of vegetating plants, later it was determined as Phoma macdonaldii according to taxonomy of Boerema et al. (2004). There are described the morphological and cultural traits of this species, its anamorphous and teleomorphous stages of development; the photoes of these stages are presented.