Biological features of Oenothera tetragona roth. in the conditions of culture in the Non-Chernozem Zone of Russia

Relevance. Oenothera tetragona is an ornamental plant used in folk medicine. Until now, studies of the biological characteristics of the Oenothera tetragona have not been carried out on the territory of the Non-Chernozem zone of the Russian Federation. The purpose of the work is the introduction and biological study of the Oenothera tetragona in the Non-Chernozem zone of Russia in the conditions of the Moscow region. Methodology. The experiment was based on two-month-old seedlings according to a 60x30 cm pattern. Phenological observations and biometric measurements (during the mass flowering phase) were carried out according to the methods adopted at VILAR (All-Russian scientific research Institute of medicinal and aromatic plants). Experimental data were processed according to B.A. Dospehov. Weather conditions were checked on the Weather and Climate website. Microspecimens were prepared according to methods for light microscopy.