БІОМОРФОЛОГІЧНА ХАРАКТЕРИСТИКА РОДУ LEMNA L. РОДИНИ LEMNACEAE GREY. В ІНТРОДУКЦІЇ

Abstract

The results of the research of biomorphological characteristic of Lemna L. ofLemnaceae. Grey. family of the collection O. V. Fomin Botanical garden are shown.The family is presented by 3 genera (Lemna L., Spirodela Schleid.,Wolffia Horkel ex Schleid.) and 6 species. Genus Lemna L.contains 4 species. Thecomparative characteristic of the main features of the introduced representatives ofLemna genus was carried out. For the first time phenospectres has been presented,where the longest, medium and shortest seasonal vegetative development of eachspecies are noted.Their taxonomical diversity, ecobiomorphological features,geographycal distribution, conditions, methods of the inroduction and practical useare observed.It is shown that according to the results of the study of bioecologicalcharacteristics of the family Lemnaceae, Lemna genus in the collection of theBotanical Garden named after. acad. O. V. Fomin has 4 species. The taxonomy ofgenera, geographic distribution, life form, biomorphological peculiarities in theconditions of introduction, methods of care, reproduction and practical use are given.For the given systems the family belongs to the class Monocotyledones, Arales order.By its biomorphological characteristic it is perennial, grassy, aquatic plants. All ofthem have floating on the surface or in the water of the leaf, in L. turionifera they arepapillomas and form, in September, turions. The comparative table of thecharacteristics of the main features of the introduced species is presented: form,length (mm), leaf coloring, number of veins, presence of anthocyanins and theformation of turions. For the first time, eight phenosperms of seasonal vegetativedevelopment of introduced species are presented. It is proved in the article thatcultivation methods in protected and open ground contribute to the maintenance oftropical and subtropical species of the genus, for which, in our conditions, we uselimiting, floating plastic foam plastic and immersed, plastic, transparent, containers.Key words: Lemna, distribution, biomorphology, introduction.