The time needed for incubation of P. ostreatus mushrooms varied according to treatment. The first harvest happened between 23
and 28 days after inoculation in the control and in samples grown
in low concentrations of Se. Higher levels of Se prolonged this incubation time (Table 1), as harvesting was initiated after 36 days
when grown in the substrates with 25.4, 51, 76.4 or 102 mg kg1
of Se. At this time, the second flush was beginning in the control,
the substrate without Se addition (Table 1). Prolonged times for
mushroom formation were also observed in L. edodes enriched
with sodium selenite in cold water at concentrations of 0.32 and
0.64 mM, while concentrations above 0.96 mM completely inhibited mushroom formation