Adaptation of plum home (Prunus domestica) micro plants to in vivo conditions

The aim of the research was the possibility of using zeolite for the adaptation of micro plants of plum home variety Kazanskaya under in vivo conditions. The control was a substrate for experiments based on grassroots peat (manufactured by JSC “Udmurttorf”, Udmurt Republic, Russia). In the studied variants, zeolite (Tatarsko-Shatrashanskoe deposit, Republic of Tatarstan, Russia) was added to peat in 60, 90, and 120 g/l doses. Microplants were also planted on a 100% zeolite substrate. It has been established that the survival rate of domestic plum micro plants to non-sterile conditions in a grassroots peat substrate with the addition of zeolite in all doses is significantly higher than in the control variant (78.3%) and varies within 86.7–99.2%. The survival rate of domestic plum micro plants in a 100% zeolite substrate was 80.8% at the control indicator’s level. At the first stage of adaptation, the growth length of micro plants in the bottom peat substrate with the addition of zeolite at doses of 60 and 90 g/l increased significantly. It amounted to 1.9 and 3.3 cm, respectively, with 1.2 cm in control. Compared with the maximum allowable duration of adaptation according to GOST R 54051-2010 of 45 days, the transformation of home plum was 21 days in general. At the same time, in the variants with the addition of zeolite to the substrate based on grassroots peat at doses of 60: 90 and 120 g/l, the growth length of home plum micro plants was, on average, 6.0, 8.0, and 5.3 cm, respectively, and the height of adapted micro plants to the end of the second stage of adaptation were 7.0; 9.0; 7.3 cm, which exceeded the performance of State Standard (SS) R 54051-2010.