ЛИЛЕЙНИКИ КОЛЛЕКЦИИ БОТАНИЧЕСКОГО САДА-ИНСТИТУТА ПГТУ
Authors: Окач М.А. , Мухаметова С.В. 
Published: February 2025

Приводится анализ коллекции лилейника гибридного Ботанического сада-института ПГТУ по декоративным признакам в 2015–2016 гг.: окраска околоцветника, размер цветка, высота цветоноса, количество цветков в соцветии. Представлен материал по истории создания коллекции, проанализированы материалы выверки сортов по дате регистрации и именам оригинаторов. Установлено, что в коллекции преобладают средне- и высокорослые сорта с пастельными и жёлтыми тонами околоцветника, со средним диаметром цветка. За период 2015–2016 гг. цветение изученных лилейников происходило с конца мая по начало сентября. Выделены лилейники с ранними, средними и поздними сроками начала и окончания цветения, определены сорта с короткой и длительной продолжительностью цветения. Более поздно зацветающие сорта характеризовались более длительным периодом цветения.
The research is aimed at analyzing the genus Hemerocallis collection in the Botanical Garden-Institute of Volga State University of Technology (Yoshkar-Ola, Mari El Republic). The research was carried out in 2015 and 2016 years. The objectsof research were plants of 53 daylilies hybrids and 3 species growing in the exhibition “Decorative Herbaceous Plants”. Methodology. Varietal matching of daylilies, reconciliation of originators, year of registration as well as distribution of varieties by flower size, height of generative shoot were made in accordance with the American Hemerocallis Society databases. From 9 to 12 plants of each variety were chosen and diameter of 15–20 their flowers and 5–10 flower spikes were measured. The total number of flowers in a inflorescence and the number of simultaneously open flowers were counted, and the shape of the perianth was taken into account. The color of the perianth was determined by the color scale of the Royal Horticultural Society. All daylilies are distributed by the x average ± σcriterion according to the flowers number in the inflorescence into small, medium and multi-flowered, and by the flowering period – into early, medium and late ones. Results. The authors determined that the largest number of varieties in the garden collection was bred in 1960-1970 years. The predominance of varieties with pastel and yellow tones of the perianth, with an average flower diameter from 11.6 to 15.5 cm was revealed. The height of generative shoot is dominated in medium-and tall varieties. The flowering period of the studied daylilies is from the end of May to the beginning of September. Early-flowering varieties (George Weld, Royal Sovereign, Dr Regel, and Queen of Mai) bloomed until the end of June. The vast majority of plants bloomed in the third decade of July. The daylilies with early, medium and late dates of the beginning and end of flowering were found. Daylilies Royal Sovereign, George Weld, Angel Mine, Queen of Mai, Dr Regel, Stella de Oro, Tejas and H. fulva had a short flowering duration. Varieties Favorite Things, Wah Wag, Derby Bound and Sandalwood had a long flowering duration. Later blooming varieties were characterized with a longer flowering period. Conclusion. To increase the diversity of the collection fund of the Botanical Garden-Institute, it is recommended to replenish it with modern varieties of XXI century selection as well as national selection. It is necessary to add to the collection low-growing and dwarf varieties with pink, purple, lilac and two-tone color, with tiny and giant flowers as well as varieties with May–June flowering period and with a long flowering duration. The research results can be used in landscaping of settlements of Mari El Republic and neighbor regions.