INTRODUCTION OF PITTOSPORUM BANKS EX SOL. SPECIES IN A FRAME AREA: HISTORY AND PROSPECTS

In article are provided the data on history of opening of Pittosporum species. The\udresults of introduction and relevant research of this genus in frame area are presented.\udSome 9 introduced taxa are considered: Pittosporum heterophyllum Franch, P. tobira Ait., P.\udtobira var. variegatum Hort., P. undulatum Vent., Р. tenuifolium Gaertn, P. crassifolium\udSoland. ex Putterl., P. eugenioides A. Cunn, P. viridiflorum Sims, P. sahnianum Gowda. We\udanalyzed the botanical-geographical origin and ecological-morphological features of\udplants. The results are presented of introduction success that testified a high rate of\udsuccess of introduction for all the studied species. Researches were conducted by standard\udmethods of plant introduction. By results of phenological supervision it was proved that\udconsidered species are the ecological cosmopolitans. Despite sharply changed intensity of\udecological parameters of the maintenance (in greenhouse and interiors) the plants are\udcapable to pass cyclically all phenological phases, changing the terms and duration of\udmain phenological phases. These changes are especially typical for duration of dormant\udperiod. The period of active growth of sprouts was registered for I-III and VI-VIII months.\udThe terms of this period were changed annually from 78 to 106 days. Considerably longer\udperiod of sprouts growth was characteristic for species: P. crassifolium, P. tenuifolium, and\udP. heterophyllum. The results of experimental studies allows to separate some species\udwithin the genus that are more dependent upon the level of illumination – P eugenioides,\udP. tenuifolium, P. crassifolium, P. undulatum.\udStudy of generative phase revealed high seasonal synchronism of blossoming among\udP. undulatum, P. tobira, P .tobira v. variegatum, P. heterophyllum, P. viridiflorum and low one\udamong P. sachnianum. Our research in the conditions of the protected soil in greenhouse\udand adaptation test of Pittosporum in various types of interiors of Krivbass testified the\udhigh adaptive ability of species to the industrial- transformed environment (emissions of\uddust and various gases, high radiation level), and ability to maintain dryness and low air\udtemperature. Results of researches confirm expediency of intensive introduction of these\udplants that are very perspective for replenishment of collection funds and phytodesign