In Vitro Germination and Organogenesis of Endangered Neo-Endemic Baltic Dunes Species Linaria loeselii Schweigg

This study focuses on the endangered neo-endemic Baltic dunes species Linaria loeselii Schweigg. (Plantaginaceae), also known as Linaria odora (M. Bieb.). By utilizing in vitro cultures, we successfully germinated seeds collected in situ. Our method, which involved using media supplemented with 5 mu mol/L 6-benzylaminopurine, led to the indirect regeneration of shoots after 60 days of culture in the dark, significantly increasing the number of progeny plants. Additionally, the medium supplemented with 2.85 mu mol/L indole-3-acetic acid and 10.2 mu mol/L paclobutrazol allowed rooting after 30 days of shoot fragments. This research provides a potential basis for developing Linaria loeselii introduction programs into the environment, thereby contributing to the conservation of this endangered species.