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. 2021 Jun 16;8(6):201669. doi: 10.1098/rsos.201669

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© 2021 The Authors.

Published by the Royal Society under the terms of the Creative Commons Attribution License http://creativecommons.org/licenses/by/4.0/, which permits unrestricted use, provided the original author and source are credited.

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Figure 4. — Environmental stresses. (a–c) Spatial averages over the 25 sites and (d–f) site specific local prediction for the 95-percentiles of the water, drought and heat stress indices WSI, DSI, HSI. The stress indices are defined as WSI = (1 − Y_w/Y_p), DSI = (1 − Y_wd/Y_w), HSI = (1 − Y_wh/Y_w), where Y_w is water limited yield while Y_p is potential yield of a cultivar tolerant to heat and drought stress around flowering, Y_wd is a yield of cultivar sensitive to drought around flowering, Y_wh is a yield of cultivar sensitive to heat stress around flowering (see Methods for more details). Nomenclature explained in figure 1. Cultivar: Mercia HD; Soil: Hafren (AWC = 177); Sowing date: 20/10.