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. 2017 Oct 26;8:1750. doi: 10.3389/fpls.2017.01750

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Copyright © 2017 Moreno-Ortega, Fort, Muller and Guédon.

This is an open-access article distributed under the terms of the Creative Commons Attribution License (CC BY). The use, distribution or reproduction in other forums is permitted, provided the original author(s) or licensor are credited and that the original publication in this journal is cited, in accordance with accepted academic practice. No use, distribution or reproduction is permitted which does not comply with these terms.

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Outputs of the piecewise linear models in the case of a lateral root (rtcs A3) for which the 2-zone model selected by the slope heuristic and the optimal 3-segment piecewise linear function do not fit biological assumptions (lack of the elongation zone and null slope within the elongation zone respectively). (A) Optimal 2-segment and 3-segment piecewise linear functions, sub-optimal 3-segment piecewise linear function and first root hair position; (B) Posterior division zone (DZ), elongation zone (EZ) and mature zone (MZ) probabilities; (C) Posterior segmentation probabilities highlighting the difference between the 2nd segmentation and the optimal segmentation in 3 zones.