抄録
The stability of suppressiveness of highly suppressive petites of Saccharomyces cerevisiae was examined. The results obtained were; 1). Acriflavine induced neutral and low-suppressive petites with a high frequency. 2). A transient increment of suppressiveness was observed when the suppressive petite was mated immediately after ultraviolet-light irradiation. 3). In contrast to acriflavine, ultraviolet-light irradiation induced neither neutral nor low-suppressive petites, but it did induce a petite with intermediate suppressiveness.
