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. 2017 Dec 13;7:17537. doi: 10.1038/s41598-017-16071-4

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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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Relationships of seed-related traits. (a) Correlation between each pair of the investigated traits. (b) Principle component analysis (PCA) of the investigated traits. Seeds were collected at 11 different growth stages that were generated from 8 environments to evaluate three vigor traits (standard germination, SG; accelerated aging germination, AAG and cold test germination, CTG), two physiological traits (hundred-seed weight, HSW and seed moisture content, SMC), and an ecological trait (≥10 °C accumulated temperature from pollination to harvest, AT10_ph). *Indicates a significant correlation at p < 0.001.