[The use of fast electrons with different energies in the selection of Streptomyces kanamyceticus].

It is shown on the prototrophic strain Streptomyces kanamyceticus that relative biological activity of neutrons is higher than that of gamma rays and depends on the bundle energy. The mutagenic efficiency of superfast neutrons is 2-3 times as high as the effect of neutrons with the energy of 1.4-1.

[Lethal and mutagenic effect of fast neutrons of different energies on the spores of Streptomyces griseus].

A study was made of lethal and mutagenic effects of fast neutrons of different energy on spores of prototrophic and auxotrophic strains of Streptomyces griseus. Relative biological effectiveness of fast neutrons is higher than that of gamma-rays and depends on beam energy. Neutrons of 22-50 MeV induce Streptomyces griseus mutations more frequently (by one order of magnitude) than neutrons of 1.