. The extraction ion and mass spectra chromatograms of the acidic plant hormones reacted with DMED (A), (C), (E), (G) and (I) indicate the extraction ion chromatograms of the acidic plant hormones (ABA、GA3、IAA、JA and SA) reacted with DMED; (B), (D), (F), (H) and (J) indicate the mass spectra chromatograms of the acidic plant hormones (ABA、GA3、IAA、JA and SA) reacted with DMED.
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