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. 2021 Aug 11;21:365. doi: 10.1186/s12870-021-03152-w

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© The Author(s) 2021

Open AccessThis 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 licence, and indicate if changes were made. The images or other third party material in this article are included in the article's Creative Commons licence, unless indicated otherwise in a credit line to the material. If material is not included in the article's Creative Commons licence 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 licence, visit http://creativecommons.org/licenses/by/4.0/. The Creative Commons Public Domain Dedication waiver (http://creativecommons.org/publicdomain/zero/1.0/) applies to the data made available in this article, unless otherwise stated in a credit line to the data.

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Fig. 1 — Microscopy observations of kiwifruit shoot anatomical structure. (a) Images of the anatomical structure of shoots after 0 h, 1 h, and 4 h of treatment (− 25 °C) for both genotypes. (b) Anatomical structure images of untreated shoots of both genotypes. I, the ratio of pith; II, the vessel density; III, the ratio of xylem; IV, the ratio of phloem. (c) Parameters of the anatomical structure of both genotypes. The bars represent the standard errors of the means (n = 3). The asterisks indicate that the values are significantly different (** for P < 0.01)