Microorganisms Cause Rotting of Grape Roots Infected by Phylloxera in Gazakh Regio

This distribution is almost conditional because there are also the pests in partially infected and a few totally infected regions (free zones). It is enough to mark this fact that phylloxera was found in just 9 hectares of grape plantations, but now about 50-60% of plantations are infected with phylloxera. The samples of grape sorts (Kaberne, Tabrizi, Bayanshira) which infected with phylloxera have taken from viticulture plantations of Gazakh region with the purpose of determination of species composition of microorganisms which cause rotting the roots of grapevines in Azerbaijan conditions. The quantity of microorganisms separated from the roots of Kaberne grape cultivars infected by phylloxera was 100%. Fungi belonged to Cylindrocarpon specie by 30%, but in the roots of these grape cultivar were not belong to Gliocladium and Fusarium species. The bacteria belong to phytopatogenic Pseudomonas species by 28.5%, and Bacillus species by 17.5%. At the same time, it was observed that the fungi belong to saprotrophic Mucor species (10.5%), Absidia species (9%), and Rhacodiella species (4.5%). The quantity of microorganisms separated from the roots of Tabrizi grape sort infected by phylloxera was 100%. Fungi belong to phytopatogenic Gliocladium species was 11.5%, and Fusarium species was 25%. In the roots of this grape sort no fungus was observed belong to Cylindrocarpon species. There were identified bacteria belong to phytopatogenic Pseudomanas species by 18%, and the bacteria belong to Bacillus species by 35%. In the roots of this grape sort no species was observed belong to saprotrophic fungi. The quantity of microorganisms separated from the roots of Bayanshira grape cultivars damaged by phylloxera was 100%. It is shown that the fungi belong to phytopatogenic Gliocladium species are 30.5%, the fungi belong to Cylindrocarpon species are 31%, and the fungi belong to Fusarium species are 13.5%. In the roots of this grape sort no bacteria observed. There are the fungi belong to saprotrophic Penicillium species by 10%, the fungi belong to Absidia species by 7.5%, and the fungi belong to Rhacodiella species by 7.5%. Phytopathogenic fungi species: Fusarium, Gliocladium, Cylindrocarpon; phytopathogenic bacteria species: Pseudomonas, Bacillus; saprotrophic fungi species: Mucor, Absidia, Molissia, Penicillium and Rhacodiella caused rotting the roots of grape by phylloxera were determined in Gazakh region of Azerbaijan.