Application of chlorophyll fluorescence for the diagnosis of salt stress in tomato “Solanum lycopersicum (variety Rio Grande)” |
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| Authors: | Lobna Zribi,Gharbi Fatma,Rezgui Fatma,Rejeb Salwa,Nahdi Hassan,Rejeb Mohamed Né jib |
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| Affiliation: | 1. Institut National de Recherche en Génie Rural, Eaux et Forêts. BP 10, Rue Hedi Karray 2080 Ariana, Tunisie;2. Faculté des Sciences de Tunis. Département de Biologie. Tunis, Tunisie;3. Institut National de Recherche Agronomique de Tunis. Rue Hedi Karray 2080 Ariana, Tunisie |
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| Abstract: | To study the response of tomato (Solanum lycopersicum cv. Rio Grande) to salinity, the effect on plant growth, water relations, stomatal conductance and Chlorophyll fluorescence was investigated. Tomato plants were grown in peat culture under controlled conditions and submitted during 28 days to saline stress ranging from 0 to 25, 50, 100, 150 and 200 mM of NaCl. At the end of the experiment period, plant growth was significantly decreased with increasing salinity. |
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| Keywords: | Chl, Chlorophyll ETR, electron transport rate F0, minimal Chl a fluorescence level in dark-adapted leaves F&rsquo 0, minimal Chl a fluorescence in light-adapted leaves Fm, maximal Chl a fluorescence level in dark-adapted leaves F&rsquo , mmaximal Chl a fluorescence level in light-adapted leaves Fv, maximum variable Chl a fluorescence level in dark-adapted leaves Fv&rsquo , maximum variable Chl a fluorescence level in light-adapted leaves Fs, steady-state Chl a fluorescence level Fv/Fm, maximum quantum efficiency of PSII photochemistry ΦPSII, quantum yield of PSII electron transport (actual PSII efficiency) Φexc, intrinsic efficiency of open PSII (efficiency of excitation energy capture by open PSII reaction centres) qp, photochemical quenching NPQ, non-photochemical quenching PSII, photosystem II PPFD, photosynthetic photon flux density incident on the leaf QA, primary quinone electron acceptor of PSII gs, stomatal conductance ψw, leaf water potential |
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