Acta Univ. Agric. Silvic. Mendelianae Brun. 2012, 60(8), 109-118 | DOI: 10.11118/actaun201260080109

Effect of exogenously application selected phytohormonal substances on the physiological and morphological indicators of Philadelphus x hybrid in containers

Martin Jonáš, P. Salaš, T. Baltazár
Ústav šlechtění a množení zahradnických rostlin, Mendelova univerzita v Brně, Valtická 337, 691 44 Lednice, Czech Republic

The experiment was established in order to eliminate the effect of stress factors acting on woody plants cultivated in containers. The timber Philadelphus x hybrid 'Mont Blanc'. The timber was in 1.5 l containers. The experiment was evaluated effect of exogenouse application of phytohormonal substances on select physiological indicators (stomatal conductance, chlorophyll fluorescence and chlorophyll content), were measured three times during the vegetation. Morphological indicators (diameter of root neck, total length of shoots and number of shoots), were evaluated at the end of vegetation. Phytohormones affecting the impact of stress on plants were used for the purpose. Abscisic acid, 24-epibrassinolid, kinetin and spermine were applied by spraying the leaf in three concentrations (0.01 mg.l-1, 0.1 mg.l-1 a 1 mg.l-1). In the results were found highly significant differences compared to controls with other variants, especially in the evaluation of physiological parameters. The most significant influence on the stomatal conductance was observed in the variants treated with abscisic acid. Application 24-epibrassinolid significantly increased the chlorophyll content in comparison with control variant. Morphological parameters reached the best results in variants treated with 24-epibrassinolid and spermine.

Keywords: abiotic stress, phytohormones, Philadelphus x hybrid, physiological indicators, morphological indicators
Grants and funding:

This publication was supported by Project No. 4/2012/519 provided by the Internal Grant Agency of MENDELU.

Received: September 13, 2012; Prepublished online: March 29, 2013; Published: March 30, 2013  Show citation

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Jonáš, M., Salaš, P., & Baltazár, T. (2012). Effect of exogenously application selected phytohormonal substances on the physiological and morphological indicators of Philadelphus x hybrid in containers. Acta Universitatis Agriculturae et Silviculturae Mendelianae Brunensis, 60(8), 109-118. doi: 10.11118/actaun201260080109
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