Original title: Atmospheric CO2 concentration, light intensity and nitrogen nutrition affect spring barley response to drought and heat stress
Authors: Findurová, Hana ; Veselá, Barbora ; Opoku, Emmanuel ; Klem, Karel
Document type: Papers
Conference/Event: MendelNet 2021, Brno, 2021/11/10-2021/11/10, Mendelova univerzita, Brno (CZ), 20211110
Year: 2021
Language: eng
Abstract: The aim of this study was to compare physiological responses of two spring barley varieties,\ndiffering in their oxidative stress tolerance, to drought and heat stress after pre-treatment under different\nirradiation regimes, CO2 concentrations, and nitrogen fertilisation levels. High light intensity, elevated\nCO2, and additional UV radiation increased flavonoid accumulation. Moreover, more flavonoids were\ninduced in oxidative stress-sensitive variety Barke. Combined drought and heat stress caused a large\ndecline in CO2 assimilation, whereas heat stress alone caused only minor changes. Under combined\nstress, plants grown under low light intensity and no UV irradiation performed the best despite their\nhigher initial water use efficiency and lower flavonoids content.
Keywords: barke; bojos; co2 assimilation; flavonoids; water use-efficiency
Project no.: EF16_019/0000797
Funding provider: GA MŠk
Host item entry: MendelNet 2021: Proceedings of 28th International PhD Students Conference, ISBN 978-80-7509-821-4

Institution: Global Change Research Institute AS ČR (web)
Document availability information: Fulltext is available at external website.
External URL: https://mnet.mendelu.cz/mendelnet2021/mnet_2021_full.pdf
Original record: https://hdl.handle.net/11104/0338713

Permalink: http://www.nusl.cz/ntk/nusl-519930


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Research > Institutes ASCR > Global Change Research Institute
Conference materials > Papers