Autor(i)/Author(s): Viera Šajbidorová, Helena Lichtnerová
Názov/Title: Water Deficit Impact on Selected Physiological Parameters of the Woody Plant Cornus mas L.
Zdrojový dokument/Source: Plants in Urban Areas and Landscape
Typ dokumentu/Document Type: Scientific paper
ISSN: 2585-9811
ISBN: 978-80-552-1829-8
DOI: https://doi.org/10.15414/PUAL/2018.64-68
Vydavateľ/Publisher: Slovak University of Agriculture in Nitra
Rok, strany/PY, pages: 2018, 64-68
Publikované online/Published on-line: 2018-05-20
Jazyk/Language: eng
Abstract: Studying resistance of woody plants and herbs to drought has become the subject of various experiments. The
paper presents the study of impact of the water scarcity on chlorophyll fluorescence and stomatal conductance of
the woody plants Cornus mas L. The experiment was carried out on plants in two different water regimes (a control
variant was maintained with soil water supply on 60 % and a stress variant with soil water supply on 30 %). Chlorophyll
fluorescence was carried out by chlorophyll fluorometer in a 21 days´ period in two growing seasons of 2013 and
2014. The following chlorophyll fluorescence parameters were recorded: maximum quantum efficiency of PSII (Fv/
Fm), effective quantum yield of PSII (φPSII) and chlorophyll fluorescence decrease ratio (RFD). Stomatal conductance
(gs) was carried out by leaf porometer in 21 days period in two growing season, 2013 and 2014. By the results the
water deficit represented by soil water supply on 30 % does not affect the values of Fv/Fm. The values of φPSII and Rfd
were significantly affected due to water deficit in the soil in a model plant. Limiting of the irrigation on model plants
resulted in the reduction in the stomatal conductance (gs).
Keywords: Cornus mas L., chlorophyll fluorescence, stomatal conductance, water deficit
Práva/Rights: Act on copyright and rights related to copyright (Copyright Act) as amended (consolidated version), Slovak Republic; Creative Commons Attribution 4.0 Licence
Toto dielo je publikované pod/This work is licensed under a Creative Commons Attribution 4.0 International License.
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