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. 2017 Nov 23;7:16132. doi: 10.1038/s41598-017-16470-7

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© The Author(s) 2017

Open Access This article is licensed under a Creative Commons Attribution 4.0 International License, which permits use, sharing, adaptation, distribution and reproduction in any medium or format, as long as you give appropriate credit to the original author(s) and the source, provide a link to the Creative Commons license, and indicate if changes were made. The images or other third party material in this article are included in the article’s Creative Commons license, unless indicated otherwise in a credit line to the material. If material is not included in the article’s Creative Commons license and your intended use is not permitted by statutory regulation or exceeds the permitted use, you will need to obtain permission directly from the copyright holder. To view a copy of this license, visit http://creativecommons.org/licenses/by/4.0/.

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Stomata in culm sheath, foliage leaf blades and branches, indicated by arrows. pr, prickle; pa, papilla; mh, microhair. (a) The abaxial epidermis of culm sheath under fluorescence microscopy, showing a few stomata. Bar = 200 μm. (b) The abaxial epidermis of the culm sheath under SEM. Bar = 200 μm. (c) The adaxial epidermis of culm sheath under fluorescence microscopy, showing more stomata. Bar = 200 μm. (d) The adaxial epidermis of culm sheath under SEM. Bar = 200 μm. (e) The abaxial epidermis of foliage blade under fluorescence microscope, showing the large number of stomata. Bar = 100 μm. (f) The abaxial epidermis of foliage blade under SEM. Bar = 50 μm. (g) Observations of stomata in the adaxial epidermis of foliage blade under fluorescence microscope, showing fewer stomata than that found in the abaxial epidermis. Bar = 200 μm. (h) The stomata in the adaxial epidermis of the foliage blade under SEM. Bar = 100 μm.