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Purple and green stem Brassica napus plants growth and morphology under drought (10% PEG-6000) on, respectively. DAB staining (A) PS (Ck), (B) GS (Ck), (C) PS (PEG), (D) GS (PEG) and NBT staining, (E) PS (Ck), (F) GS (Ck), (G) PS (PEG), and (H) GS (PEG), respectively.
