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Barley germination in response to different growth regulators. Percentage of germinated seeds 24 and 48 h after imbibition in 4 ml water supplemented with 5 × 10–4% (v/v) dimethyl sulfoxide (mock buffer) or 1 μM phytohormone (tZ, trans-Zeatin; IAA, Indole-3-acetic acid; GA3, Gibberellic acid; ABA, abscisic acid) in dimethyl sulfoxide (final concentration, as for the mock). Different letters indicate significant differences (Kruskal-Wallis test, p < 0.05).
