Biologia Plantarum

, Volume 23, Issue 5, pp 328–334 | Cite as

Effect of gibberellic acid and salicylic acid on the activity and electrophoretic pattern of IAA-oxidase during floral induction inImpatiens balsamina

  • Surinder Kumar
  • K. K. Nanda
Original Papers


IAA-oxidase activity increased in the stem as well as in the leaves of plants treated with GA3, SA and GA3 + SA during the early stages under inductive and non-inductive photoperiods, the activity being the highest in GA3 + SA-treated plants. An isoenzyme of IAA-oxidase with Rm 0.15 developed in the stem as well as in the leaves subsequent to 1 or 2 inductive treatments. As this band persisted till the end of the experiment, it may be associated with the initiation as well as development of floral buds. Another band (Rm 0.30) appears to be associated with the phenol (SA) as it developed in the stem as well as in the leaves of SA- and GA3 + SA-treated plants under both photoperiods. A band with Rm 0.60 developed in the leaves but not in the stem of GA3-, SA- and GA3 + SA-treated plants under both photoperiods.


Gibberellic Acid TIBA Floral Induction Disc Electrophoresis Triiodobenzoic Acid 
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Copyright information

© Academia 1981

Authors and Affiliations

  • Surinder Kumar
    • 1
  • K. K. Nanda
    • 1
  1. 1.Department of BotanyPanjab UniversityChandigarhIndia

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