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Effect of seed priming on root microstructure of WDR under drought stress. (A, F) NP + NS, no priming and no stress; (B, G) NP + DS, no priming and drought stress; (C, H) HP + DS, hydro priming and drought stress; (D, I) AsA + DS, AsA priming and drought stress; and (E, J) Spd + DS, Spd priming and drought stress. (A–E) ×60 magnification; scale bars, 100 μm; (F–J) ×120 magnification; scale bars, 50 μm.
