Biologia Plantarum

, Volume 48, Issue 3, pp 395–399

Effects of Pre-Treatments with Abscisic Acid and/or Benzyladenine on Gas Exchange of French Bean, Sugar Beet, and Maize Leaves During Water Stress and After Rehydration

  • J. Pospíšilová
  • P. Baťková


Net photosynthetic rate (PN), transpiration rate (E), and stomatal conductance (gs) during water stress and after rehydration were measured in Phaseolus vulgaris, Beta vulgaris, and Zea mays. Immediately before imposition of water stress by cessation of watering, plants were irrigated with water (control), 100 μM abscisic acid (ABA), and/or 10 μM N6-benzyladenine (BA). In all three species, application of ABA decreased gs, E, and PN already 1 h after application. However, during water stress gs, E, and PN in plants pre-treated with ABA remained higher than in plants pre-treated with water. Positive effects of ABA application were observed also after rehydration. In contrast, the effects of pre-treatment with BA were species-specific. While in bean plants BA application ameliorated negative effect of water stress, only very slight effects were observed in maize, and in sugar beet BA even aggravated the effects of water stress.

Beta vulgaris net photosynthetic rate Phaseolus vulgaris stomatal conductance transpiration rate water use efficiency Zea mays 


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Copyright information

© Kluwer Academic Publishers 2004

Authors and Affiliations

  • J. Pospíšilová
    • 1
  • P. Baťková
    • 2
  1. 1.Institute of Experimental BotanyAcademy of Sciences of the Czech RepublicPraha 6Czech Republic, e-mail
  2. 2.Charles UniversityFaculty of SciencePraha 2Czech Republic

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