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. 2021 Jul 15;53(8):1250–1259. doi: 10.1038/s41588-021-00895-y

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© The Author(s) 2021

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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Fig. 4 — a, Historical effective population size N_e for CSS (top) and CSA (bottom). Stairway plot showing that C. sinensis underwent two bottlenecks during the known periods of major climate upheaval: the Gelasian epoch and the Last Glacial Maximum. The first one is shared by both CSS and CSA, and the second one is unique to CSS. b, Specific presentation of cultivated populations with ice core data for the past 4000,000 years (ref. ²⁵).