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. 2022 Jan 15;255(2):39. doi: 10.1007/s00425-021-03809-8

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Fig. 2 — Daily minimum temperature near ground from October to the end of May for five different field experiments. Temperature was measured 5 cm above the ground in 2013/14 (a), 2014/15 (b), 2015/16 (c), 2017/18 (d) and 2018/19 (e). Climate data for field experiments were obtained from the long-term meteorological station of the Potsdam Institute for Climate Impact Research (PIK) (https://www.pik-potsdam.de/de/produkte/klima-wetter-potsdam/klimazeitreihen). The sowing date and the date of the first bagging of the inflorescences are marked with arrows