Abstract

When seedlings of Pharbitis nil Chois., strain Shifukurin were grown in a medium containing acetic acid bacteria-oxidized ethanol (AABOE) or acetic acid bacteria-oxidized methanol (AABOM), 100% flowering was induced by exposure to a single dark period of 9.5 to 10.5 hr, while this regime induced little or no flowering in control plants. When the plants were grown in water containing the freeze-dried substance from an AABOE solution, flowering was also enhanced. Vegetative growth was considerably suppressed by these fermented alcohols and by the freeze-dried substance from an AABOE solution. However, the freeze-dried substance from the AABOM solution had no effect on either flowering or vegetative growth.

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