Downy mildew ( Plasmopara viticola ) and powdery Erysiphe necator are the most common economically significant fungal diseases in vineyards. The task of this work is to study genotypes new promising hybrid forms table grapes for presence resistance genes downy Rpv10 Rpv3 Ren9 using DNA-markers. was carried out on grape hybrids under working names Agat dubovskiy, Akelo, Arabella, Artek, Dubovski...

 Background to the research and aims. French pathologists have been intensively monitoring the prevalence of sunflower downy mildew in France over a 20 years period. Despite efforts to produce resistant varieties of sunflower, this monitoring has revealed that there has been a recent and rapid emergence of new and endemic (found only in France) races, that has led to an increase from one origi...