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. 2020 Dec 17;10:22163. doi: 10.1038/s41598-020-78695-3

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© The Author(s) 2020

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 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/.

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Temperature effect on chlorophyll index (a), thylakoid membrane damage (b), pollen viability (c), and pod number (number of pods in 1-m row length) (d) of peanut genotypes grown under field conditions in 2018 and 2019. Values shown are least-squares means. Error bars represent standard errors about the least-squares mean of 16 observations (2 years × 2 blocks × 4 replications) except for Sugg and SPT 06-07, which have 8 observations (1 year × 2 blocks × 4 replications). Least-squares means with different letters are significantly different according to Fisher’s least significant difference (LSD) test at α = 0.05. Blue letters compare genotypes under AT and red letters under HT. An asterisk (*) above bars indicate a significant difference at α = 0.05 between AT and HT for that genotype. AT, ambient temperature (31/22 °C for 2018 and 28/22 °C for 2019; average day/night temperatures during the 17-days and 18-days treatment periods in 2018 and 2019, respectively); HT, high temperature (41/27 °C for 2018 and 38/26 °C for 2019). Data from 2 years (2018 and 2019) were pooled together for analysis.