Influence of substrate and plant growth regulators on the rooting of Chrysanthemum

South-Ural Botanical Garden-Institute of Ufa Federal Research Center of the Russian Academy of Sciences, Republic of Bashkortostan, Ufa, Russia

^* Corresponding author: cvetok.79@mail.ru

Abstract

The purpose of the research is to study the influence of the substrate and plant growth stimulants on the rooting of cuttings of some varieties of Chrysanthemum coreanum (H. Lev. & Vaniot) Nakai garden group ‘Multiflora’. Four varieties of Chrysanthemum introduced into the South-Ural Botanical Garden-Institute of Ufa Federal Research Center of Russian Academy of Sciences (‘Sunbeam Bronze Bicolor’, ‘Meridian Red’, ‘Ditto Dark Pink’ and ‘Daybreak Apple Blossom’) were used as research objects. We examined the influence of two types of substrates (sand and vermiculite) and four growth stimulants on the rooting of chrysanthemums (Zircon, Lignohumate brand AM potassium, Beres Super seaweed extract, Beres AminoComplex). It was revealed that the treatment of chrysanthemum cuttings with plant growth regulators contributed to an increase in the number (by 7−117%) and length of roots (by 3−118%) in the majority of the studied objects. It was noted that positive results from the use of preparations were obtained when chrysanthemum cuttings were placed in vermiculite, in contrast to options with sand as a substrate. It has been shown that the greatest effect is noticeable when cuttings are soaked in Beres AminoComplex and Beres Super solutions compared to the control option. Varietal differences in chrysanthemums to the effects of root formation stimulants during vegetative propagation have been revealed. Thus, in the varieties ‘Ditto Dark Pink’ and ‘Daybreak Apple Blossom’, an improvement in the biometric parameters of cuttings was observed when rooted in vermiculite after exposure to plant growth regulators. It was noted that when chrysanthemum cuttings are soaked for three hours, in contrast to their wetting, the number of roots increases by 38−88% in all variants of the experiment.