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. 2018 May 24;18:92. doi: 10.1186/s12870-018-1310-9

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© The Author(s). 2018

Open AccessThis article is distributed under the terms of the Creative Commons Attribution 4.0 International License (http://creativecommons.org/licenses/by/4.0/), which permits unrestricted use, distribution, and reproduction in any medium, provided you give appropriate credit to the original author(s) and the source, provide a link to the Creative Commons license, and indicate if changes were made. The Creative Commons Public Domain Dedication waiver (http://creativecommons.org/publicdomain/zero/1.0/) applies to the data made available in this article, unless otherwise stated.

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Fig. 4 — Effects of different R: FR values on on chlorophyll content, photosynthesis rate, actual photochemical efficiency of PSII, and the content of H₂O₂, proline and MDA in tomato phyB1 mutants under salinity stress. a chlorophyll a, chlorophyll b and carotenoid content. b net photosynthesis rate. c actual photochemical efficiency of PSII. d H₂O₂ content. e proline content. f MDA content. All these parameters were measured 8 days after salinity treatment. T1, 0 mM NaCl + 7.4 R: FR; T2, 0 mM NaCl + 1.2 R: FR; T3, 0 mM NaCl + 0.8 R: FR; T4, 100 mM NaCl + 7.4 R: FR; T5, 100 mM NaCl + 1.2 R: FR; T6, 100 mM NaCl + 0.8 R: FR. Vertical bars on the lines represent the SE (n = 5), Bars with different letters are significantly different at the 0.05 level (Duncan’s multiple range test)