Effects of different greenhouse media and auxins on cutting propagation of red-leaved Japanese maple

Mankind has lived a life intertwined with plants from past to present and has benefited from plants in many ways. It is a well-known fact that plants affect human psychology in addition to all their other characteristics. Aesthetic plants in living spaces also provide spiritual relaxation in people. Since the red-leaved Japanese maple (Acer palmatum Thunb. 'Atropurpureum'), a member of the Sapindaceae family, is also a cultivar frequently preferred in parks and gardens with its decorative features, it is important to determine its production methods. From this point of view, the aim of the study is to examine the effects of different greenhouse media, including Greenhouse-1 (air temperature at 20±2°C, rooting table temperature at 25±2°C and humidity level at 70±2%) and Greenhouse-2 (air temperature at 20±2°C, rooting table temperature at 20±2°C and humidity level at 70±2%), and auxins (IAA, IBA and NAA at 3000 and 5000 ppm doses) on the rooting of red-leaved Japanese maple cuttings. The first callus and first root formation dates, rooting percentage, callus percentage, root length and the number of roots were determined on softwood cuttings taken from the rootstock plant in May in the Kanuni Campus of Karadeniz Technical University and planted in perlite rooting medium. As a result of the analysis of variance on the obtained data, statistically significant differences occurred between the greenhouse media at the 99% confidence level and between the phytohormones at the 95% confidence level in terms of rooting percentage. 109 days after the cuttings were planted, the first root formation occurred in the NAA 5000 ppm treatment in the Greenhouse-1 medium, while the highest rooting percentage was determined as 63.33% in the same greenhouse medium and treatment. As a result of the study, it can be recommended that the rooting table temperature be 5°C higher than the air temperature for better rooting.