ADAPTATION OF BLUE HONEYSUCKLE (LONICERA CAERULEA L.) MICROPLANTS AFTER IN VITRO CULTURE UNDER DIFFERENT LIGHTING CONDITIONS AND MYCORRHIZAL PREPARATIONS

Abstract

This study was conducted to identify the optimal lighting source in combination with mycorrhizal preparations for successful adaptation of honeysuckle microplants to non-sterile conditions of the varieties 'Gigant's Heart' and 'Jugana'. We tested two types of lighting: high-pressure sodium lamps (HPS) and light-emitting diodes (LEDs). The mycorrhizal preparations 'Kormilitsa', 'Aegis', and 'Great White Premium Mycorrhizae Plant Success' were added to the substrate for adaptation. Plant measurements were taken on the 42nd day of adaptation.The results showed that the honeysuckle plants studied ex vitro adapted effectively under full-spectrum white LED lamps combined with additional red and blue diodes (peak wavelengths: ~450 nm, ~660 nm), with the addition of the mycorrhizal preparations 'Aegis' or 'Great White Premium Mycorrhizae Plant Success' to the substrate. Moreover, in the honeysuckle plants of the ‘Gigant's Heart’ and ‘Jugana’ varieties studied ex vitro, the survival at the adaptation stage increased by 1.2 times, and the total root length by 1.6-2.0 times.