Preliminary studies on some chlorophyll fluorescence parameters in Crassulaceae species of different leaf characters under water stress

Rózsavölgyi, Tamás and Lehoczki, Endre and Mihalik, Erzsébet: Preliminary studies on some chlorophyll fluorescence parameters in Crassulaceae species of different leaf characters under water stress. Acta biologica Szegediensis, (49) 1-2. pp. 223-225. (2005)

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Abstract

Chlorophyll fluorescence quenching parameters of ABSTRACT Kalanchoe daigremontiana, K. fedtschenkoi cv. marginata, K. tomentosa, Crassula multicava and Cotyledon ladysmithiensis were compared in well watered and water deficient plants. The maximum quantum yield (Fv/Fm) of photosystem II (PSII) proved to be a very stable parameter in all species and water treatments. The EQY, NPQ, qP and ETR differed in Crassula multicava from those of the other plants. The allocation of absorbed light by PSII that is utilized to photosynthetic electron transport and thermal dissipation was also calculated. Analysis of the chlorophyll fluorescence parameters demonstrated, that Crassula multicava was the only plant, which exhibited a higher proportion of excitation energy allocated to PSII photochemistry under water deficit at 1200 µmol m-2s-1 actinic light (AL) intensity.

Item Type: Article
Event Title: Hungarian Congress on Plant Physiology, 8., 2005, Szeged, Hungarian Conference on Photosynthesis, 6., 2005, Szeged
Journal or Publication Title: Acta biologica Szegediensis
Date: 2005
Volume: 49
Number: 1-2
Page Range: pp. 223-225
ISSN: 1588-385X
Language: angol
Heading title: Photosynthesis; Proceedings
Uncontrolled Keywords: Természettudomány, Biológia
Additional Information: Bibliogr.: 225. p.; Abstract
Date Deposited: 2016. Oct. 17. 09:24
Last Modified: 2018. May. 28. 10:41
URI: http://acta.bibl.u-szeged.hu/id/eprint/22732

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