Kondratenko, S.I., Gorobchenko, O.A., Linnik, Z.P., Kormosh, S.M., Mytenko, I.M., Pozniak, O.V. and Chaban, L.V. 2025. Analysis of phenotypic diversity of true leaves in lettuce lines (Lactuca sativa var. secalina L.) created by physical and chemical mutagenesis. Biophysical Bulletin. 54 (Dec. 2025), 83-99. DOI:https://doi.org/10.26565/2075-3810-2025-54-06.