Methodological recommendations for lighting modes for growing rootstocks and varieties of domestic plum at the stages of micro propagation, in vitro rooting and ex vitro adaptation determine the usage of lamps with different light spectra, allowing to obtain more higher results of micro clonal propagation, including: the height of regenerated plants and the number of leaves, the propagation ratio; development of the root system; growth and physiological state at the stage of ex vitro adaptation.

The research was carried out in 2019–2020 in the laboratory of the fruit-growing department of RUЕ “Brest regional agricultural experimental station of the National Academy of Science of Belarus”. The objects of research were microplants of in vitro zoned rootstocks VPK-1, Saint Julien GF 655/2 and microplants of domestic plum varieties Vengerka Belorusskaya, Venera, Empress. Studies have shown that at the stage of proliferation a high propagation coefficient was achieved at the second passage of Empress variety, when illuminated by the spectrum “red, blue, infrared, ultraviolet” (4.7±1.17) and in “control” (4.3±0.32). On fourth passage of cultivation when illuminated by the spectrum “red, blue, infrared, ultraviolet” Empress’s variety propagation coefficient is 5.4±0.17. When illuminated by the spectrum “red, blue, infrared, ultraviolet” the average shoot length was the longest for the Vengerka Belorusskaya variety (4.5±0.68 сm), by “full spectrum” was the best variant for the Venera variety (3.3±0.34 cm). When evaluating the number of leaves on the shoot, the advantage of the “full spectrum” lamp for the Vengerka Belorusskaya variety (16.4±0.68 pcs) is noted.