title: [Generation time of pure cultures of heterotrophic microorganisms isolated from Lake Baĭkal].
abstract: Generation time was determined in pure cultures of heterotrophic microorganisms in the conditions similar to those of Baikal in June--July of 1972. Generation time was found to be 37+/-7, 16+/-2.5, 16+/-3.2, and 10+/-2.5 hours, respectively, when the cultures had been diluted with Baikal water in the following rations: 1 : 0,1 : 5,1 : 10, and 1 : 20. No differences in the growth rate were found among 11 cultures of heterotrophic microorganisms isolated from Baikal. Conditions limiting the microbial growth improve from the dilution of 1 : 0 to the dilution of 1 : 5. The mean time of generation is 27 hours for June--July. Generation time determined for pure cultures of heterotrophic microorganisms in the conditions similar to natural can be used to calculate production of the bacterial biomass for a definite period of the year.
mesh_terms: D001419:Bacteria / Q000254:growth & development*; D001951:Brevibacterium / Q000254:growth & development; D002175:Candida / Q000254:growth & development; D002455:Cell Division; D003470:Culture Media; D005658:Fungi / Q000254:growth & development*; D011549:Pseudomonas / Q000254:growth & development; D012505:Sarcina / Q000254:growth & development; D012621:Seasons; D012800:Siberia; D013045:Species Specificity; D014871:Water Microbiology
chemical_list: D003470:Culture Media
vernacular_title: Vremia generatsii chistykh kul'tur geterotrofnykh mikroorganizmov Baĭkala