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. 2023 Sep 15;23:431. doi: 10.1186/s12870-023-04416-3

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© The Author(s) 2023

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/. 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. 2 — Correlation coefficients between GY_WW, GY_RF and various drought tolerance indices (A), GN_WW, GN_RF and various drought tolerance indices (B), TKW_WW, TKW_RF and various drought tolerance indices (C) and SW_WW, SW_RF and various drought tolerance indices (D) for Iranian landraces and cultivars wheat in the well-watered and rain-fed environments. Abbreviations: GY, grain yield; GN, grains number per spike; TKW, thousand kernel weight; SW, spike weight; WW, well-watered; RF, rain-fed; TOL. tolerance index; MP, mean product; GMP, geometric mean product; STI, stress tolerance index; ATI, abiotic stress tolerance index; SSI, stress susceptibility index; DI, new drought resistance index; HM, harmonic mean