MICHOLOGICAL STUDY OF SOME SPECIES OF CONIFERALES USED IN GREENING IN ABSHERON

The present investigation is about the introduction of micromycetes which are pathogenic from 17 species (Pinus pallasiana, Pinus sylvestris, Pinus halapensis, Pinus nigra, Pinus pungens Engelm, Picea excelsa, Pinus eldarica, Larix europaea , Abies sibirica Ledeb., Abies alba Mill, Juniperus communis, Juniperus sabina, Pinus pallasiana, Araucaria araucana, Microbiota decussata, Platycladus orientalis, Taxus baccata) of plants belonging to the family Araucariaceae, Pinaceae, Taxaceae, Taxodicaeae and Cupressaceae in Absheron condition. . As a result, conifers and shrubs are infected through parasitic and non-parasitic diseases causing the common weakening under different types of abiotic factors. This accelerates the ageing and death of trees and shrubs. The purpose of our research is to study the diseases of ornamental coniferous assignments used in landscaping in Absheron conditions. There have been identified the typology and etiology of coniferous diseases that affect susceptible ornamental species. The research was carried out on the basis of the samples taken from the Central Botanical Garden is consisted of various parks and gardens in Baku, as well as private greenhouses. They were collected twice in spring and autumn in during the growing season. The origin, species, growing and pathological features of plants were studied in the during first sampling time. The samples were planted in two ways. Directly planted-diseased plant tissues were grown in Sabouraud CAF agar medium in a Petri dish. The second method was settled the diseased plant tissue in flasks with distilled water and inoculated the obtained liquid in Sabouraud CAF agar Petri dishes. There were identified 11 species of pathogenic fungi (Alternaria tenuis Ness., Aspergillus glaucus, Lophodermium macrosporum, Hartigiella laricis, Lophodermium nervisquim, Lophodermium juniperum, Cronartium flaccidum, Fusarium oxysporum, Fusarium commune, Fusarium torreyae, Rizoctonia solani Küb, Cryptospora longispina). It is concluded that conifers are sensitive to these pathogenic fungi, which leads to the drying of some morphological organs of the plant and even the complete destruction of the plant.