Possibilities of increasing biodiversity in the genus

In this article, for the first time in Russia, the reproduction results of four species of the genus Elaeagnus L. by soft cuttings are presented comparatively. The promising genus of Elaeagnus L. have been identified in terms of fruiting and ornamentally. Their reproduction methods by soft cuttings with growth regulators, which make it possible to obtain high-quality seedlings for planting plantations, have been studied. Experiments on reproduction by soft cuttings were carried out in 2018 - 2020 on the territory of the Fruit Station of the RSAU-Moscow Agricultural Academy, named after K.A. Timiryazev. The cuttings were treated with three different growth regulators, stimulants of root formation (IMA-indolylbutyric acid, GHC-hydroxycinnamic acid (Zircon), and BCI + GGA (Universal rooting agent) and water was used as a control. The obtained results were processed by analysis of variance, as a result of which the morphological variability of rooted soft cuttings was revealed when treated with growth and development regulators. It was found that the genotype and stimulants significantly affect the average length and number of roots, the growth of shoots, their number, and the number of leaves on the shoot. The most effective was the growth and development regulator GKK + IMC. The results obtained make it possible to increase the biodiversity of valuable genotypes of the genus Elaeagnus L