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. 2008 May 31;59(10):2673–2686. doi: 10.1093/jxb/ern137

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© 2008 The Author(s).

This is an Open Access article distributed under the terms of the Creative Commons Attribution Non-Commercial License (http://creativecommons.org/licenses/by-nc/2.0/uk/) which permits unrestricted non-commercial use, distribution, and reproduction in any medium, provided the original work is properly cited.

This paper is available online free of all access charges (see http://jxb.oxfordjournals.org/open_access.html for further details)

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Fig. 2. — Cytokinin concentrations in roots and leaves. (a, b, c) Cytokinin concentrations in roots of 28-d-old non-transformed (NT) and hemizygous Ubi::ZOG1 (+) maize plants. (d, e, f) Cytokinin concentrations in leaves of 28-d-old maize plants. (g, h, i) Cytokinin concentrations in leaves of 95-d-old maize plants. (a, d, g) O-glucosides; (b, e, h) free bases; (c, f, i) ribosides and nucleotides. Z, trans-zeatin; cZ, cis-zeatin; iP, N⁶-(Δ²-ispentenyl)adenine; ZR, trans-zeatin riboside; cZR, cis-zeatin riboside; iPR, N⁶-(Δ²-ispentenyl)adenosine; ZOG, trans-zeatin O-glucoside; cZOG, cis-zeatin O-glucoside. Values are means (±SE) of three samples with two HPLC analyses for each. Significant differences between transformants and controls are indicated by *P <0.05, **P <0.01, or ***P <0.001.