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Effect of seed priming on root ultrastructure 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) Scale bars, 2 μm; (F–I) scale bars, 0.5 μm. CW, cell wall; V, vacuole; M, mitochondria; N, nucleus. ER, endoplasmic reticulum; P, plastid; G, golgi apparatus.
