Results of the Introduction of Some Species of Lianas on the Absheron

The article presents data on the methods of reproduction, the dynamics of growth and development of primary seedlings, the study of phenology, as well as the structure of the root system and the nature of the growth of 1-3-year-old plants of the species Trachelospermum jasminoides (Lindl.) Lem., Bougainvillea spectabilis Willd., Vitis amurensis Rupr., Jasminum sambac (L.) Aiton and Smilax aspera L. in the conditions of Absheron. In 2017-2019, in the conditions of open and closed ground of the Central Botanical Garden, research was carried out on seed and vegetative propagation. Since they are new introducers, a number of bioecological features have not been comprehensively studied. The species V. amurensis, T. jasminoides and S. aspera were studied in the open conditions of Absheron, and in the closed conditions: B. spectabilis and J. sambac. The species V. amurensis, T. jasminoides, B. spectabilis, S. aspera grew rapidly in sunny areas, while the species J. sambac grows better in shady places. During the study, the highest results when propagated by cuttings were found in the species S. aspera (90%), B. spectabilis(80%) and V. amurensis (90%). During seed propagation, the highest percentage of germination was observed in the species V. amurensis (80%) and S. aspera — (80%) in the first ten days of March when seeds were sown to a depth of 2-3 cm. When studying the root system of the vines of the studied species, it was observed that V. amurensis has about 20 lateral roots, S. aspera has 60, and J. sambac with a fibrous root system has more than 60 lateral roots. As a result, it was found that under the soil and climatic conditions of Absheron, of the studied species, V. amurensis and S. aspera grow and develop normally, bloom profusely and form high-quality seeds, while in the species B. spectabilis and J. sambac, despite abundant flowering during the year, the formation of seeds is not observed.