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. 2018 Aug 13;18:168. doi: 10.1186/s12870-018-1384-4

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© The Author(s). 2018

Open AccessThis article is distributed under the terms of the Creative Commons Attribution 4.0 International License (http://creativecommons.org/licenses/by/4.0/), which permits unrestricted use, distribution, and reproduction in any medium, provided 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 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.

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Fig. 3 — Hierarchical cluster analysis of representative DEGs in two broccoli hybrid combinations. a indicated the expression profiles of representative DEGs in the NKR-04/− 05/− 06 hybrid triad. b indicated the expression profiles of representative DEGs in the Bro-10/− 11/− 12 hybrid triad. The expression levels of these DEGs in the hybrid were significantly different from those in both parents. The accession numbers of DEGs which shared in both hybrid triads were visual. The heat maps were constructed based on the log₂ (fold-change of the normalized expression levels) of two arbitrary samples in each hybrid triad. The color scale represents the log₂ (fold-change of the normalized expression levels) of two arbitrary samples with blue denoting low expression and red denoting high expression