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Influence of the chlorophylls-to-carotenoids ratio on light use efficiency estimation by optical parameters
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SYSNO ASEP 0485226 Document Type C - Proceedings Paper (int. conf.) R&D Document Type Conference Paper Title Influence of the chlorophylls-to-carotenoids ratio on light use efficiency estimation by optical parameters Author(s) Ač, Alexander (UEK-B) RID, ORCID, SAI
Kováč, Daniel (UEK-B) RID, ORCID, SAI
Veselovská, Petra (UEK-B) SAI, RID
Večeřová, Kristýna (UEK-B) RID, SAI, ORCID
Klem, Karel (UEK-B) RID, ORCID, SAISource Title Quo vaditis agriculture, forestry and society under global change? Conference proceeding. - Brno : Global change research institute, 2017 / Urban O. ; Šprtová M. ; Klem K. - ISBN 978-80-87902-22-6 Pages s. 58-61 Number of pages 4 s. Publication form Print - P Action Quo vaditis agriculture, forestry and society under Global Change? Event date 02.10.2017 - 04.10.2017 VEvent location Velké Karlovice Country CZ - Czech Republic Event type EUR Language eng - English Country CZ - Czech Republic Keywords chlorophylls carotenoids ; light use efficiency ; optical parameters Subject RIV ED - Physiology OECD category Plant sciences, botany R&D Projects LO1415 GA MŠMT - Ministry of Education, Youth and Sports (MEYS) LM2015061 GA MŠMT - Ministry of Education, Youth and Sports (MEYS) Institutional support UEK-B - RVO:86652079 Annotation The influence is examined of changing leaf photosynthetic pigments concentrations on sensitivity of the
photochemical reflectance index (PRI) and ΔPRI optical parameters in relation to light use efficiency
(LUE). Photosynthetic and leaf chlorophylls-to-carotenoids (Chl/Car) ratio changes during the growth of
European Beech (Fagus sylvatica) and Norway spruce (Picea abies) saplings were induced by altering the
living environment inside growth chambers. Point reflectance measurements of each individual tree were
recording changes in optical properties while measurements were being taken simultaneously of altering
photosynthesis. Based on the evaluation of 45 pairs of measurements conducted on six individual saplings,
the observed variability in the strength of the PRI and ΔPRI versus LUE relationships was compared to the
resulting leaf Chl/Car ratio of each tree. Data were used to explain the influence of changing pigments on
the sensitivity of each individual optical parameter with regards to the LUE estimation.Workplace Global Change Research Institute Contact Nikola Šviková, svikova.n@czechglobe.cz, Tel.: 511 192 268 Year of Publishing 2019
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