1. Department of Agrotechnology of Useful Plants, Curator of the Flax Collection, Institute of Natural Fibres and Medicinal Plants - National Research Institute (Instytut Włókien Naturalnych i Roślin Zielarskich – Państwowy Instytut Badawczy), Poznań, Poland
2. Faculty of Mathematics and Computer Science, Adam Mickiewicz University, Poznań, Poland