The effect of Pi or deuterium depleted water on foliar stomata of Saintpaulia ionantha L. exvitroplantlets sprinkled foliar or radicular

Authors: Adriana PETRUŞ-VANCEA¹*, Dorina CACHIŢĂ-COSMA²

Affiliation: ¹ Biology Department, Faculty of Science, University of Oradea, Romania; ² “Vasile Goldiş” Western University Arad, Romania

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ABSTRACT. We studied the effect of Pi water (PiW) or deuterium depleted water (DDW) (with 25 ppm D), treatments applies, during 30 days, administration which were made by spraying on the foliar limbs of Saintpaulia ionantha L. (African violet) exvitroplantlets leafs, or on the substratum, concerning the stomata constitution, identified at the level of inferior epidermis. Both sprinkling with Pi water or deuterium depleted water determined the decrease of stomata density, even to 44% in the case of exvitroplantlets foliar sprinkled with DDW and watered to the base – on the perlite substratum – with distillate water (DW), and just with 19% in treatment with PiW and the stomata cell width with maximum 33%.

Keywords: deuterium depleted water, Pi water, stomata, acclimatization, African violet