| Abstract: | The already-known promotion of pileus formation in pure culturesof Poly-porus brumalis by heightened evaporating conditionsis shown to be associated with enhanced translocation ratesinto the fruit-body (as investigated by dyes). This does notresult in changed proportions of dry matter or potassium inthe tissues at the stipe apex, but accelerated growth (dry-weightbasis) occurs in this region. Reduction of concentration ofthe medium (and hence probably of the concentration of the translocationstream) diminishes pileus production. Light intensity has onlya minor effect on dye transport. Fruit-bodies arrested in growthor killed show a negligible capacity for dye transport. |
