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The culture of Royal pelargonium in conditions of humid subtropics

https://doi.org/10.18454/VSTISP.2017.5.7594

Abstract

The article discusses the results of years of study of the varieties Royal pelargonium (grandifl orum) (Pelargonium grandifl orum hybrids hort.) in Russian Research Institute of Floriculture and Subtropical Crops in the conditions of the Black sea coast of Russia. In the structure of the generic complex Pelargonium L’her. ex Ait. they occupy 41 % and account 59 accessions. Based on the analytical review of the literature, a brief history of the origin of the group of Royal pelargonium and its fi rst varieties is presented. The results of comparative characteristics of economically valuable and biological qualities of varieties of old breeding and fi ve variety group are given: Aristo, Elegance, Candy Flowers, Hazel and Bermuda. It is revealed that the studied varieties of Royal pelargonium belong to three groups according to the strength of growth: vigorous (above 40 cm), medium (30-40 cm) and low do not exceed (25 cm). The main part (75 %) is occupied by medium-sized varieties, vigorous varieties are only 10 %, and 15 % varieties are low-growing belonging to the groups Candy Flowers and Hazel. Large-fl owered varieties with a fl ower diameter exceeding 6 cm were noted from the Eleganse series and partly from Aristo. It is established that in the conditions of open gound in Sochi, the Royal pelargonium begin to bloom in the second and third decades of April, and in the mass fl owering phase they come after 10-15 days. The terms and duration of fl owering of varieties of all variety groups were determined. It is noted that in the period of extremely high daily temperatures, exceeding +30 оС, fl owering completely ceases. With the establishment in September of optimum temperatures in the range of +22 ... +25 oC, fl owering resumes, but it becomes less abundant.

About the Author

N. M. Gutiyeva
FSBSI “Russian Research Institute of Floriculture and Subtropical Crops”
Russian Federation


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For citations:


Gutiyeva N.M. The culture of Royal pelargonium in conditions of humid subtropics. Horticulture and viticulture. 2017;(5):52-57. (In Russ.) https://doi.org/10.18454/VSTISP.2017.5.7594

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ISSN 0235-2591 (Print)
ISSN 2618-9003 (Online)