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

Ukrainian Journal of Ecology

L. I. Boyko¹ 

[1] Kryvyi Rig botanical garden NAS of Ukraine

关键词: introduction;    Pittosporum;    phenological rhythms;    stability;    potential;    phytodesign;   

DOI  :  10.15421/20144_25

学科分类：生物科学（综合）

来源: Alex Matsyura Publishing

【 摘 要 】

In article are provided the data on history of opening ofPittosporumspecies. The results of introduction and relevant research of this genus in frame area are presented. Some 9 introduced taxa are considered:Pittosporum heterophyllumFranch,P. tobiraAit.,P. tobira var. variegatumHort.,P. undulatumVent.,Р. tenuifoliumGaertn,P. crassifoliumSoland. ex Putterl.,P. eugenioidesA. Cunn , P. viridiflorumSims,P. sahnianumGowda. We analyzed the botanical-geographical origin and ecological-morphological features of plants. The results are presented of introduction success that testified a high rate of success of introduction for all the studied species. Researches were conducted by standard methods of plant introduction. By results of phenological supervision it was proved that considered species are the ecological cosmopolitans. Despite sharply changed intensity of ecological parameters of the maintenance (in greenhouse and interiors) the plants are capable to pass cyclically all phenological phases, changing the terms and duration of main phenological phases. These changes are especially typical for duration of dormant period. The period of active growth of sprouts was registered for I-III and VI-VIII months. The terms of this period were changed annually from 78 to 106 days. Considerably longer period of sprouts growth was characteristic for species:P. crassifolium ,P. tenuifolium , andP. heterophyllum.The results of experimental studies allows to separate some species within  the genus that are more dependent upon the level of illumination –P eugenioides, P. tenuifolium, P. crassifolium, P. undulatum.Study of generative phase revealed high seasonal synchronism of blossoming amongP. undulatum, P. tobira, P .tobira v. variegatum, P. heterophyllum, P. viridiflorumand low one amongP. sachnianum.Our research in the conditions of the protected soil in greenhouse and adaptation test ofPittosporumin various types of interiors of Krivbass testified the high adaptive ability of species to the industrial- transformed environment (emissions of dust and various gases, high radiation level), and ability to maintain dryness and low air temperature. Results of researches confirm expediency of intensive introduction of these plants that are very perspective for replenishment of collection funds and phytodesign.Key words: introduction, Pittosporum, phenological rhythms, stability, potential, phytodesign.

【 授权许可】

CC BY