SEL’SKOKHOZYAISTVENNAYA BIOLOGIYA [AGRICULTURAL BIOLOGY], 2015, V. 50, ¹ 1, pp. 92-98 ISSN 2313-4836 (Online) doi: 10.15389/agrobiology.2015.1.92rus doi: 10.15389/agrobiology.2015.1.92eng VARIABILITY OF MORPHOMETRIC PARAMETERS IN NATURALIZED AND CULTIVATED Ser. PLANTS UNDER DIFFERENT ENVIRONMENTAL CONDITIONS V.I. MALYAROVSKAYA Russian Academy of Agricultural Sciences, 2/28, ul. <...> Yana Fabriciusa, Sochi, 354002 Russia, e-mail subplod@mail.ru, malyarovskaya@yandex.ru A b s t r a c t suburb as a component of adventive flora, thus, the Plants cultivated in humid subtropics of Russia are mostly exotic species. <...> One of them, Ser., can grow in city parks and gardens, as well as in the forest of Sochi . habitat conditions differ significantly. <...> To estimate the genetic resources, implement breeding programs and optimize plant cultivation, an adaptability and intraspecial variability of plants must be evaluated. <...> In our observation in Sochi region during 2006-2008 carried out on the Black Sea coast (in the gardenmuseum «Tree of Friendship» and in Kuban Subtropical Botanic Garden) and in the mountain area (Krasnaya Polyana and Solokh-Aul settlements), a phenotypic variability of morphological traits was analyzed in naturalized and cultivated . plants (Madame Faustin Travouillon and Madame Faustin Travouillon cultivars), and an influence of the external conditions to the range of variations was investigated. <...> It was shown that genotype considerably influenced the plant height (63.5 %), leaf length (82.0 %), inflorescence diameter (19.3 %) and bract length (84.1 %). <...> Climatic factors of the year also affected leaf width in both cultivars (22.5 %). <...> With increase in height above sea level (400-600 m in settlements Krasnaya Polyana and Solokh-Aul) most of the morphometric parameters increased. <...> Maximum changes were observed in inflorescence diameter and bract length (30.1-55.4 % in Madame Faustin Travouillon and 26.5-71.5 % in Madame Maurice Hamard), indicating optimization of a complex of abiotic and edaphic factors at this high-rise level. <...> The lowest variability (5.5-12.3 %) was indicated in shoot length both in cultivated and naturalized plants. <...> Leaf length variation in cultivated plants ranged from 15.8 to 20.7 % being at 34.9 % in plants grown in Solokh-Aul. <...> Thus, the range of variability on most of the tested morphological traits was wider in the naturalized plants if compared to the cultivated plants with slightly changed parameters. <...> Therefore, the plants growing in city <...>