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Endogenous bioactive cytokinin levels in hemp hypocotyls at H6, H9, H15, and H20. tZ, trans-zeatin; tZR, trans-zeatin riboside; DZ, dihydrozeatin; DZR, dihydrozeatin riboside; iP N6-(Δ2-isopentenyl)adenine, iPR N6-(Δ2-isopentenyl)adenosine. ANOVA or Kruskal–Wallis (K–W) results are indicated depending on the normality of data distribution (Shapiro–Wilk p > 0.05 or p < 0.05, respectively). n = 3 biological replicates.
