Application efficiency of Superstim modifications in low doses on Lonicera caerulea adaptation stage and it’s after-effect during subsequent growing

Relevance. In recent years, interest in the edible honeysuckle culture has increased in Russia, the wide distribution of which is hampered by the lack of quality planting material. The technology of clonal micropropagation allows for a short time to obtain a large amount of honeysuckle planting material, more than a thousand regenerated plants per year from one meristematic apex introduced into an in vitro culture. It is hundreds of times more than in traditional methods of vegetative propagation. Adaptation to non-sterile conditions is the final and most crucial stage of clonal micropropagation, the loss of which can be from 50 to 90%. It should be noted that there is practically no research on how the further development of adapted honeysuckle plants takes place during subsequent growing.

Methods. Researching of growth regulators of the new generation Superstim 1 and Superstim 2 effect in low and ultra-low doses on the survival rates and development of honeysuckle plants at the stages of adaptation subsequent growing.

Results. Superstim 1 is more effective at physiological concentrations – 1 x 10-7 and in the field of ultra-low doses – 1 x 10-14, 1 x 10-15%. At the stage of subsequent growing, a positive after-effect of physiological concentrations – 1x10-3 and 1x10-7 was observed, and an ultra-low dose – 1x10-17%. The growth regulator Superstim 2 at the stages of adaptation and subsequent growing is effectively used only in one concentration – 1x10-16%. The additional foliar treatments at the stage of subsequent growing are not necessary. 

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