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. 2015 Mar 5;10(3):e0118691. doi: 10.1371/journal.pone.0118691

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© 2015 Wang et al

This is an open-access article distributed under the terms of the Creative Commons Attribution License, which permits unrestricted use, distribution, and reproduction in any medium, provided the original author and source are properly credited.

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Fig 3 — Changes over time in the tap root depth (K, L), number of 1st-order roots (M, N), total first-order root length (O, P) and first-order root surface area (Q, R) of P. euphratica seedlings subjected to each watering treatment in the clay sediment and the clay/river sediment (F = inundation treatment; 30 cm = 30 cm water table depth treatment; 50 cm = 50 cm water table depth treatment; 70 cm = 70 cm water table depth treatment. Each point represents the mean (±S.E.) value for 5 plants. The letters in the tables indicate homogeneous subsets (Tukey’s tests) at 15, 30, 45, 60 and 75 days.