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. 2011 Sep 1;6(9):e23942. doi: 10.1371/journal.pone.0023942

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Dong 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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Root to shoot ratio (A and D), total stolon length (B and E) and specific internode length (C and F) of the surviving Alternanthera philoxeroides fragments are given. Bars (A–C) in the left graphs are grand means+SE of four burial depth treatments. Bars (D–F) in the right graphs are grand means+SE of four internode length treatments. Letters show the differences between the treatments (Duncan's tests, P = 0.05).