Effect of preculture on the slime production inChlamydomonas humicola Lucksch fo

Batch-culturedCblamydomonas bumicola Lucksch fo. showed seasonal oscillations of slime production even in constant conditions. These alterations were found to be correlated to the natural day length during the preculture of the inocula. After preculture in short day conditions production and excretion of mucopolysaccharides started earlier than after preculture in long day conditions. Dry weight production and carbohydrate content were not correlated to preculture.