Abstract
Abstract The work is devoted to the improvement of the in vitro rooting technique of valuable Lonicera caerulea L. cultivars. The influence of different types of auxins and iron sources was determined at the stage of rhizogenesis. The use of indolylbutyric acid at a concentration of 1.0 mg/l was effective for the rooting of the cultivars Solovey and Yugana: the rooting rate was 60% and 99%, respectively. When using indoleacetic and indolylbutyric acids no significant differences were found in the percentage of rooting rates in the cultivars Gzhelka, Dlinnoplodnaya, Knyaginya and Lenya. It was found that 200 mg/l of iron chelate (Fe(III)-EDDHA) and 0.5 mg/l of indoleacetic acid in the nutrient medium had a positive effect on the dynamics of root formation of most honeysuckle cultivars. It was preferable to use a nutrient medium with the addition of iron chelate Fe(III)-EDTA at a concentration of 73.4 mg / l for the cultivar Yugana (rooting rate was 76%). Keywords: LONICERA CAERULEA, CULTIVARS, IN VITRO, RHIZOGENESIS, AUXINS, SOURCES OF IRON
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