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. 2018 Jun 13;9:805. doi: 10.3389/fpls.2018.00805

FIGURE 1.

FIGURE 1

Schematic representation of the experimental design and treatments. PS, PB, and PA refer to 5 days of heat priming at the stem-elongation, booting and anthesis stages, respectively. H refers to 5 days of heat stress at the grain-filling stage. NN refers to no heat priming + no heat stress at the grain-filling stage (control); NH refers to no heat priming + heat stress at the grain-filling stage; PSH refers to heat priming at the stem-elongation stage + heat stress at the grain-filling stage; PBH refers to heat priming at booting + heat stress at the grain-filling stage; PAH refers to heat priming at anthesis + heat stress at the grain-filling stage. The morphology date is indicated according to the Zadoks scale: Stage 31, the 1st node was detectable (stem-elongation stage); Stage 41, extension of the flag leaf sheath (booting); Stage 60, the beginning of pollination (anthesis); Stage 73, early milk (grain-filling stage).