Efficiency of application of growth stimulants in cuttings of some species of the genus Lonicera L. promising in protective forestry

The article presents the results of vegetative propagation of three species of the genus Lonicera by semilignified cuttings using various growth stimulants. For each species of Lonicera, the most effective stimulants were identified. As a result, a high yield of own-rooted honeysuckle plants was obtained.

Introduction. In protective afforestation in the conditions of the Lower Volga region, shrub species are the most stable. From the family of honeysuckle (Caprifoliaceae), in forest plantations, Tatar honeysuckle (Lonicera tatarica L.) is found, which is distinguished by frost resistance, drought resistance and decorative effect. The use of drugs that stimulate root formation has a positive effect on the parameters of the roots and shoot growth in cuttings. Currently, research is being carried out aimed at studying the wide reproduction of edible honeysuckle varieties. Therefore, the purpose of this study was to study the propagation of other species of honeysuckle in semi-woody cuttings using various preparations that stimulate root formation and to isolate the most effective of them.

Objects. The objects of the study were three species of Lonicera (L. tatarica L., L. korolkovii Stapf, L. morrowii A. Gray) and 6 drugs that stimulate growth and root formation in plants.

Materials and methods. The study was conducted on the basis of the biotechnology laboratory of the Federal Scientific Center of Agroecology of the Russian Academy of Sciences. The experiment involved 6 growth stimulants: indolyl-3-butyric acid (IBA), 1-naphthaleneacetic acid (NAA), indole-3-acetic acid (IAA), Kornevin, Zircon, Epin-extra. The effectiveness of the assessment of indicators by the impact on the frequency of rhizogenesis, high rates of development of the root system (length and number of roots), as well as by the growth of shoots in cuttings. Statistical processing is carried out using the MS Excel 2016 software package and the Mann-Whitney U-test (p<0.05).

Results and conclusions. As a result of the research, it was found that all local types of honeysuckle show an increased desire to root semi-lignified cuttings. In each case, there was a different encounter with stimulant drugs, so the most important studies for each specific subject were highlighted.

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