Endogenous Gibberellins in Floating Plants and Turions of Wolffiella floridana

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Abstract
Endogenous gibberellins from floating plants and in vitro induced turions of Wolffiella floridana (Lemnaceae) were extracted and partially purified. Gibberellin‐like activity was detected in two zones of the chromatogram corresponding to Rf 0‐0.1 and Rf 0.4‐0.5 by dwarf pea bioassay. The active compounds in the two zones have been referred to in this paper as factor I and factor II respectively. There were quantitative differences in the gibberellin‐like substances of floating plants and turions. The floating plants contained more of factor I but less of factor II as compared to the turions. The chromatographic behavior of factor I was similar to either gibberellin A1 and A3 while the identity of factor II was uncertain.