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Comparison between mean shoot proliferation rate and length in upper, middle and lower segments of orthotropic stems in Araucaria excelsa R. Br. var. glauca in the medium supplemented with 0.2 μM 2iP. (U = Upper, M = Middle and L = Lower segments of orthotropic main stem). Bars are significantly different using Tukey's test at P ≤ 0.05
