The article discusses the results of the use of root formation stimulants in the green propagation of four varieties of juniper: juniperus scopilorum 'Moonglow', juniperus squamata 'Blue Star', juniperus communis 'Hibernica', juniperus virginiana in a tree-decorative nursery. Rooting was carried out in summer cultivation facilities under conditions of artificial fog. Four serial production stimulants were tested: Kornevin, Heteroauxin, Root, Zircon. Statistical processing of data showed that the use of all considered stimulants allowed us to obtain results other than control. This suggests that the use of stimulants affects the rooting of introducers, but this effect may be the opposite. It has been established that treatment of cuttings with phytohormones in some cases increases the regenerative capacity of the considered juniper varieties. A comparison between the effectiveness of the drugs shows that there are no differences between the "Root" and "Kornevin" actions, while the differences with other drugs are significant at the significance level. The greatest effectiveness was demonstrated by preparations based on β - indolylbutyric acid Ukorenit, Kornevin, as well as Heteroauxin (indolyl-3-acetic acid). Treatments with Zircon cuttings (a mixture of hydroxycinnamic acids) in most cases showed inhibition of rhizogenesis.
cuttings, juniper, root-forming stimulants, rooting.
ВВЕДЕНИЕ
Размножение древесно-кустарниковых пород зелеными черенками применяется питомниководами в течение многих веков. Черенкование позволяет полностью передать ценные качества материнского растения потомству, что особенно актуально для сохранения особо-ценных форм деревьев и кустарников. Для повышения процента укоренения в питомнике применяются обработки черенков стимуляторами корнеобразования. К веществам-регуляторам корнеобразования относятся такие химические соединения, которые в небольших количествах способны вызывать заметное повышение интенсивности биохимических процессов в растении и вследствие этого более быстрого образования корней.
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