Affiliation:
1. South Ural Research Institute of Horticulture and Potato Growing – Branch of the Ural Federal Agrarian Research Centre of the Ural Branch of the Russian Academy of Sciences
Abstract
The Maak cherry (Cerasus maackii Rupr.) has been studied for use as a scion in nursery production. The culture has such economically valuable features as resistance to diseases and pests, winter hardiness, fast regenerative ability, high rooting capacity of green cuttings. The article deals with the peculiarities of cultivation of the Maak cherry by green cuttings in the conditions of the Chelyabinsk region. The objective of the study was to evaluate the Maak cherry for the rooting ability and the possibility of obtaining a standard clonal scion. It has been found that using green shoots of the Maak cherry, 20, 30 and 40 cm long, the rooting capacity of cherry increases by 2.5; 12.5 and 19.1%, respectively, compared to the control variant (15 cm). The yield of standard rootstocks increases, when using longer cuttings 30–40 cm, when compared to the control (15 cm), or 2.5–3.4 times, respectively. Changes also occurred in the increase in the diameter of the conditional root neck, it increased by 9.3; 28.0 and 50.0% more than the control (3.2 mm). It has been proved by the experiment that at cutting length of green cuttings of the Maak cherry with the length of 40 cm, it is possible to get more than 150 pieces of clonal rootstocks suitable for winter grafting from 1m2 of the protected ground during one vegetation period. In green cuttings of the Maak cherry in a greenhouse equipped with a fogging unit, the length of green cuttings planted for rooting has a significant effect on rooting and yield of the uniform clonal rootstocks. When using 30–40 cm long annual shoots cut during the active growth period, rooting ability of the Maak cherry increased 1.3 times, the diameter of the conditional root neck – 1.5 times, the total yield of the suitable for grafting rootstocks – 3.4 times compared to the control variant (15 cm).
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