The cultivation of the cyanobacteria of the genera Anabaena and Nostoc on various nutrient media

The study of the characteristics of the development of cyanobacteria of the genera Anabaena and Nostoc on various nutrient media was carried out. It has been shown that cyanobacteria have low and medium levels of variability in cultures (6,15–22,7%), and the characteristics of colonies, filaments and cells depend on the composition of the nutrient medium. It has been established that the optimal medium for the cultivation of representatives of the genera Anabaena and Nostoc is the Bold’s Basal Medium without nitrogen. Cultivation of cyanobacteria on this medium leads to an active accumulation of biomass and an increase in the process of nitrogen fixation.