Structural Characterization and Effects of Gibberellic Acid-Containing Organometallic Polymers as Plant Growth Regulators

  • Herbert H. Stewart
  • Charles E. CarraherJr
  • Winn J. Soldani
  • Lisa Reckleben
  • Jose de la Torre
  • Shi Li Miao


Gibberellins are cyclic diterpenes with the ability to induce a number of plant responses including cell elongation and cell division. Widespread in nature, the major commercially employed gibberellin is GA3. GA3 was condensed with bis (cyclopentadienyl) titanium IV dichloride and analyzed for structural characterization. Different concentrations of both GA3 and GA3 polymer were used with varieties of common bean (Phaseolus vulgaris L.) and Hibiscus rosa sinensis var. Albo Lacinatus, a commonly utilized rooting material employed in the commercial production of grafted hybrid hibiscus. Treatment with both GA3 and the GA polymer showed great increase in height as compared with the untreated control. With respect to flowering, in general, there was an inverse relationship between GA concentrations and flower formation. With the hibiscus root stock, while roots per se were inhibited, the formation of adventitious roots was accelerated.


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Copyright information

© Springer Science+Business Media New York 1996

Authors and Affiliations

  • Herbert H. Stewart
    • 1
  • Charles E. CarraherJr
    • 2
  • Winn J. Soldani
    • 3
  • Lisa Reckleben
    • 2
  • Jose de la Torre
    • 1
  • Shi Li Miao
    • 4
  1. 1.Departments of Biological SciencesFlorida Atlantic UniversityBoca RatonUSA
  2. 2.Departments of ChemistryFlorida Atlantic UniversityBoca RatonUSA
  3. 3.Fancy HibiscusPompano BeachUSA
  4. 4.South Florida Water Management DistrictWest Palm BeachUSA

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