Abstract
Activities of separated and chromatographed substances in the nonacidic, acidic ethyl acetate and acidic butanol fractions from bean seeds, Phaseolus vulgaris L., cv. Bountiful and Kentucky Wonder, were measured in the Progress No. 9 dwarf pea bioassay grown under red light. Activity in the nonacidic fraction was shown to be attributable only to neutral substances and was free of acidic gibberellin-like substances. As the seed matures, neutral substances and one of the acidic butanol-soluble substances (B-I) increase in activity. The acidic ethyl acetate substances and butanol-soluble substance (B-II) initially increase and then almost disappear.
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