Cultivars of the Itoh peony group in the collection of the M. M. Hryshko National Botanical Garden National Academy of Sciences of Ukraine

Authors

DOI:

https://doi.org/10.21498/2518-1017.16.1.2020.201015

Keywords:

morphological and biological feature, productivity of shoot formation and flowering

Abstract

Purpose. To analyze the variety diversity of the Itoh peony group in the collection of the M. M. Hryshko National Botanical Garden National Botanical Garden National Academy of Sciences of Ukraine and determine its biological features in the new conditions of introduction.

Methods. Introduction studies, phenological observations, morphometry, statistical processing of results.

Results. The cultivars diversity of the Itoh peony group of the M. M. Hrysh­ko National Botanical Garden National Botanical Garden National Academy of Sciences of Ukraine collection was analyzed. The ornamental properties of the cultivars were described. Features of their growth and development under conditions of introduction were studied. It was revealed that the duration of vegetation of plants of Ito group varieties is 218–225 days. It was determined that plant growth begins on March 23 – April 2, flowering on May 19–28. The budding of plants was observed in the first decade of May and lasts 16–20 days. It was revealed that in the conditions of introduction ‘Morning Lilac’ and ‘Sonoma Apricot’ bloom first (May 19–20), ‘Viking Full Moon’, ‘Yankee Doodle Dandy’, ‘Yellow Waterlily’ bloom later (May 28). The height of generative shoots of plants in flowe­ring phase ranged from 60 to90 cm. Plants go dormant in winter, having formed generative shoots that successfully winter. Reproduction of plants occurs both due to the buds that form on the lower part of the stem, and the buds that form on the rhizome. The shoot-forming ability and flowering productivity are 6.0±2.5 – 19.5±4.0 shoots and 4.5±1.5 – 16.0±3.0 generative shoots per plant, respectively. Cultivars ‘First Arrival’, ‘Sonoma Apricot’, ‘Hillary’, ‘Bartzella’, ‘Morning Lilac’, ‘Lollipop’, ‘Old Rose Dandy’ are highly productive.

Conclusions. The collection of peonies of the M. M. Hryshko National Botanical Garden National Botanical Garden National Academy of Sciences of Ukraine has been expanded by Itoh Group cultivars. The R. Anderson’s breeds of 1980–1990 are more fully represented. An analysis of the ornamental features of the varieties showed that the hybrids with a semi-double flower shape of a yellow color dominate the collection. Cultivars retain all their ornamental and economic characteristics under conditions of introduction. The Itoh group varieties of the collection can be material for developing technologies for their cultivation and propagation, can be a source of replenishment and expansion of regional botanical gardens collections, planting material for gardening and landscaping, and also perform an educational and cognitive function.

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Author Biographies

В. Ф. Горобець, M. M. Hryshko National Botanical Garden National Academy of Sciences of Ukraine

Gorobets V. F.

Т. О. Щербакова, M. M. Hryshko National Botanical Garden National Academy of Sciences of Ukraine

Shcherbakova T. O.

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How to Cite

Горобець, В. Ф., & Щербакова, Т. О. (2020). Cultivars of the Itoh peony group in the collection of the M. M. Hryshko National Botanical Garden National Academy of Sciences of Ukraine. Plant Varieties Studying and Protection, 16(1), 17–24. https://doi.org/10.21498/2518-1017.16.1.2020.201015

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Section

VARIETY STUDYING AND VARIETY SCIENCE