Tymchyshyn H. Biology and peculiarities of Rhododendron L culture in Western Podilya..

Dissertation is devoted to research of biological, morphological, ecological and other peculiarities of culture in Botanical Garden of L'viv national University of Ivan Franko 84 species, 2 varieties, 3 forms, 3 hybrids, 4 cultivars (96 taxons) of differing geographical origin, a was found that the metamer structure of groups and series of Rhododendron shoot of the same type is. The lengthwise symmetry is specific and can be used as a objective criterion for solution of taxonomy of this genus. Under the Western Podilya conditions 75 taxons bear, fruits, produce viable seeds of high germination energy (60-90%). With seeds, collected on the Pozhezhevski mountain (Ukrainian Carpathian) was introduced Rh. kotchyi Simonk put into the Ukrainian Red Book. Components of substrate, necessary for growing of introducted species was selected. Practical recommendations for Rhododendron cultivation were elaborated. Perspective species for the ornamental gardening with the purpose of enrichment of Western Podilya dendroflora were chosen. Key words: Rhododendron introduction species, varieties, forms, hybrids, cultivars, metamer structure, taxonomy, substrate, young period.