Miniature (dwarf) daff odils in the collection of Federal Research Center “Subtropical Scientifi c Center of the Russian Academy of Sciences”

The Subtropical Scientifi c Center has a large collection of bulbous plants, including daff odils, dating back to the 1960s. The purpose of this work was to study miniature daff odils attracted to the collection. The research was carried out at the experimental base of the Center in Sochi (Razdolnoye village) in 2013-2019. As the collection was replenished with dwarf varieties, the work was begun on developing a methodology for evaluating this group. Climatic conditions of the research area are typical for the zone of humid subtropics, characterized by a large amount of precipitation, mainly in winter and early spring, and mild winters. During the research, it was noted that the meteorological parameters in the years of research diff ered both from the average long-term indicators and between themselves. When introducing and studying varieties, much attention was paid to both phenological observations and biometric measurements, as well as to varieties’ reproduction ability. It is established that all these parameters largely depend not only on variety characteristics, but also on climatic conditions during the growth and development of plants. Insuffi cient precipitation in some years and relatively cold winters contributed to the later phenophases, reducing their terms and biometric parameters. In general, as a result of long-term observations, it was found that in the humid subtropics of Russia, dwarf daff odils begin their vegetation in the fi rst or second ten-day period of January, which lasts from 118 to 135 days, depending on a variety. Early blooming (in the third ten-day period of February) was recorded in ‘Tete-a-Tete’ and ‘Jetfi re’ cvs. Later blooming was recorded in ‘Jack Snipe’ and ‘Canaliculatus’ cvs. in the second ten-day period of March. As a result of the research, the following miniature varieties with a plant height of less than 20 cm were selected from the daff odils collection: ‘Canaliculatus’, ‘Jack Snipe’, ‘Jetfi re’, ‘Rip van Winkle’, ‘Tete-a-Tete’ and ‘Topolino’. The studied varieties have high ornamental qualities, are resistant to biotic factors and can be used in pot culture and landscaping of open ground.

Narcissus, miniature daff odils, dwarf daff odils, plant introduction, variety study, assortment, humid subtropics

1. Martyanova L. M. Legends and myths about plants. Legends of the Ancient East, pagan myths, ancient legends, biblical stories. Moscow: Tsentrpoligraf, 2014:325-334. (In Russ.)

2. Daff Seek, American Daff odil Society, Inc., URL: https://daff seek. org. Ссылка активна на 20.04.2020. [The link is active on 20.04.2020

3. Kasperavichus A. A., Slepchenko N. A. Analysis of world trends of bulbous crops according to the data of the Royal General Bulb Growers’ Association, Subtropicheskoe i dekorativnoe sadovodstvo. 2018;64:9-18. (In Russ.) DOI: 10.31360/2225-3068-2018-64-9-18.

4. Volkova G. A., Ryabinina M. L., Motorina N. A. Introduction of daff odils in Komi Republic, Bulletin of the Botanical Garden of Saratov State University. 2016;14(1):49-53. (In Russ.)

5. Korotkikh A. S. Introduction of daff odils in Belgorod Botanical Garden, Subtropicheskoe i dekorativnoe sadovodstvo. 2015;54:46-50. (In Russ.)

6. Satekov Ye. Ya., Kubentayeva B. B., Turabzhanova M. B. Evaluation of ornamental varieties of hybrid daff odil in Altai Botanical Garden, Plodovodstvo i yagodovodstvo Rossii. 2016;46:351-354. (In Russ.)

7. Ryndin A. V., Kelina A. V., Slepchenko N. A., Klemeshova K. V. Prospects of import substitution in ornamental horticulture of the subtropical zone of Russia, Subtropicheskoe i dekorativnoe sadovodstvo. 2015;55:19-26. (In Russ.)

8. Grosheva Ye. V., Skripnikova M. K. Technology of daff odils cultivation and reproduction at annual bulbs digging, Plodovodstvo i yagodovodstvo Rossii. 2013;XXXVII(1):83-90. (In Russ.)

9. Kulikov I. M., Shevkun A. G., Vysotsky V. A., Alekseyenko L. V. Introduction, study and modern methods of hybrid daff odils breeding in the All-Russian Horticultural Institute for Breeding, Agrotechnology and Nuresery, Subtropicheskoe i dekorativnoe sadovodstvo. 2010;43(2):30-34. (In Russ.)

10. Salov S. I., Karpun N. N. Resistance of bulbous and cormaceous fl ower crops to diseases in the conditions of humid subtropics of Russia, Subtropicheskoe i dekorativnoe sadovodstvo. 2010;43(2):76-80. (In Russ.)

11. Slepchenko N. A., Lobova T. Ye. Peculiarities of daff odil varieties propagation in the conditions of humid subtropics of Russia, Plodovodstvo i yagodovodstvo Rossii. 2017;51:223-230. (In Russ.)

12. Shevkun A. G. Study of the introduced cultivars of hybrid daff odils and their introduction into production, Plodovodstvo i yagodovodstvo Rossii. 2006;15:44-47. (In Russ.)

13. Daff odil cultivar registration, Royal Horticultural Society, URL: https://www.rhs.org.uk/plants/plantsmanship/plant-registration/Daff odil-cultivar-registration. Ссылка активна на 15.03.2020. [The link is active on 15.03.2020.

14. Miniature Daff odils. The American Daff odil Society. The United States Center for Daff odil Information, URL: https://daff odilusa.org/daff odil-info/special-categories/miniature-daff odils/ Ссылка активна на 15.03.2020. [The link is active on 15.03.2020

15. Slepchenko N. A., Kelina A. V., Lobova T. Ye. Bulbous fl ower cultures in the collection of the Russian Research Institute of Floriculture and Subtropical Crops: Actual issues of fruit growing and ornamental horticulture in early XXI: mater.inter.conf., dedicated to the 120th anniversary of the found. of Inst. and 80th anniversary of the Garden-Museum “The Tree of Friendship”, (September 22-26, 2014), Sochi, 2014:177-184. (In Russ.)

16. Bolgov V. I., Evsyukova T. V., Kozina V. V., Pustynnikov M. A. Method of primary variety study of fl ower crops. Moscow: RASKHN, 1998, 40 p. (In Russ.)

17. Yevsyukova T. V. Variety study and formation of tulips and daff odils assortment for Russia, Plodovodstvo i yagodovodstvo Rossii. 2006;15:40-43. (In Russ.)

18. Slepchenko N. A. To the issue of developing the methodology for studying dwarf small-bulbous plants, Subtropicheskoe i dekorativnoe sadovodstvo. 2017;62:97-106. (In Russ.)

19. Slepchenko N. A. New approaches to the methodology for studying dwarf small-bulbous plants, Modern methodology, tools for evaluating and selecting breeding material for garden crops and vines. Krasnodar: North-Caucasian Zonal Research Institute of Horticulture and Viticulture, 2017:277-282. (In Russ.)

20. Ryndin A. V. Agroecological aspects of horticulture in humid subtropics of Russia. Sochi: VNIITSiSK, 2016, 260 p. (In Russ.)

21. Chronicle of weather in Sochi, Weather and climate, URL: http://www.pogodaiklimat.ru/history/37099.htm. The link is active on 06.03.2020. (In Russ.)