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. 2019 Sep 13;19:403. doi: 10.1186/s12870-019-1983-8

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© The Author(s). 2019

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. 3 — Regulation of the chlorophyll fluorescence index in eight rice varieties under salinity stress. The T/C ratio of chlorophyll fluorescence (F₀, F_m, and F_v/F_m) and quantum yield (Y(II), Y(NPQ), and Y(NO)) parameters were determined in control (C) and treatment (T) groups from day 8 to day 10. Each variety is indicated by a different colored line and symbol. 149: Blue/ filled triangle, 223: green/ filled circle, 245: violet/ open diamond, 8777: orange/ open square, IR28: brown/ filled square, IR64: light green/ open circle, IR66946: pink/ close diamond, Nona Bokra: jade/ open triangle