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Photosynthetic efficiency of rice plants subjected to gamma irradiation. (a–d) Maximum quantum yield of PSII (Fv/Fm) (a,b) and quantum yield of PSII electron transport (ΦPSII) (c,d) in rice plants subjected to acute (a,c) and chronic (b,d) gamma irradiation. DAI, days after irradiation. Data represent mean ± SD. Asterisks indicate significant differences between control (0 Gy) and other treatments (* p < 0.05, ** p < 0.01, *** p < 0.001).
