New strains of Streptomyces as producers of biofungicides and biological stimulators for protection of the shoots and seedlings of Tiang-Shang spruce fir (Picea schrenkiana)

摘要

The Tiang-Shang spruce fir or the spruce fir of Schrenkiana (Picea schrenkiana) is the main forest-forming species of winter green forests of Kyrgyzstan. The major factors limiting the germination and survival of shoots of the spruce fir in the mountain climatic conditions are diseases caused by phytopatogenic fungi. The antibiotic substances of Streptomyces bacteria have a great significance in phytopathology, particularly in protecting coniferous species (Novikova et al., 2002). This is because coniferous plants are more sensitive to fungicides than the majority of other agricultural and woody-shrubby plants (Stakman & Harrar, 1957).