Abstract
In the genus Schizosaccharomyces intracellular osidases and nitrite and nitrate reductases are revealed; particularly all the species possessing invertase, α-glucosidase and α-galactosidase. These characters underline the homogeneity of the genus. On the basis of osidases, nitrite and nitrate reductases results, 2 groups can be distinguished in this genus.