Ontogenesis Victoria cruziana A.D. Orb. in the greenhouse of the Stavropol Botanical Garden
https://doi.org/10.32634/0869-8155-2023-374-9-145-148
Abstract
Relevance. Water lilies are distributed almost throughout the globe. The largest are 2 species of tropical water lilies — Victoria amazonica (Poepp.) J. C. Sowerby and V. cruziana A.D. Orb. Their distribution range is South America. Of particular interest is Victoria cruziana, which grows in colder climatic conditions. On the territory of the Russian Federation, Victoria cruziana grows in the main in closed ground conditions. For 16 years, biological, morphological, adaptive features and seed reproduction of this species have been studied.
Methods. Morphological studies were carried out, the seed productivity of Victoria cruziana in closed ground conditions was assessed, taking into account air temperature, water and lighting intensity.
Results. Victoria cruziana is grown as an annual crop with a short growing season of 299.9 ± 56.3 days. The first underwater filamentous leaf appears on the 20th day after germination, and the second and third (narrow-lobed) — on the 25th. The formation of large floating leaves was noted on the 47th day, the growth of new leaves occurs every five days. The total number of leaves reaches 12 pcs. The plant enters the generative phase when the size of the leaves reaches 80–150 cm in diameter. The beginning of flowering is marked on the 120th (± 5) day, the diameter of the first flower is 20 cm (with subsequent increase). Seed collection takes place after pollination in 50 (± 2.1) days. With artificial pollination of plants, the indicators of real seed productivity of the fruit increase to 3150 seeds with a diameter of 0.5–0.6 cm, with self– pollination, 212–229 seeds with a diameter of 0.7–0.8 cm are formed.
Keywords
About the Authors
V. V. Volkova
North Caucasus Federal Agricultural Research Center
Russian Federation
Russian Federation
Valentina Valentinovna Volkova, Senior Researcher
49 Nikonov Str., Mikhailovsk, Shpakovsky district, Stavropol Territory, 356241
N. V. Shchegrinets
North Caucasus Federal Agricultural Research Center
Russian Federation
Russian Federation
Natalia Viktorovna Shchegrinets, Candidate of Agricultural Sciences, Senior Researcher
49 Nikonov Str., Mikhailovsk, Shpakovsky district, Stavropol Territory, 356241
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Review
For citations:
Volkova V.V., Shchegrinets N.V. Ontogenesis Victoria cruziana A.D. Orb. in the greenhouse of the Stavropol Botanical Garden. Agrarian science. 2023;(9):145-148. (In Russ.) https://doi.org/10.32634/0869-8155-2023-374-9-145-148
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