ACKNOWLEDGEMENTS
This research was supported by grants from the National Science Centre of Poland [UMO-2014/15/N/NZ3/04316] (KG), [UMO-2018/29/B/NZ3/01033] (ES), and [UMO-2014/15/B/NZ2/01073] (AI), and the National Research Foundation (NRF) of Korea [NRF- 2017R1A2B3009624] (JHA). We would like to express our gratitude to Professor Maarten Koornneef for providing the AI-RILs seeds used in this study. We also would like to thank Dr Agata Lipko for initial characterization of mutant lines. Dr Marta Hoffman-Sommer is kindly acknowledged for help with preparation of the manuscript.