Subtropical and ornamental horticulture
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PERSPECTIVE SPURIA IRIS CULTIVARS FOR CONDITIONS OF ALTAI FOREST STEPPE REGION

Year:
2019
The authors:
Dolganova Z. V.
DOI:
10.31360/2225-3068-2019-70-28-37
Page numbers:
28 - 37
Keywords:
iris, subgenes, species, cultivar, class, terms and duration of blooming, number of peduncles.

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The genus Iris L. is divided into 8 subgenera, 5 of them are beardless irises, among them there is a subgenus called Spuria (class SPU). There are 19 species in Spuria subgenus. The first cultivars were created in England in the XIX century by K. Foster. T. A. Washington created 17 cultivars in the USA since 1931 to 1948. Research Institute of Siberian Horticulture named after M. A. Lisavenko created the collection of Spuria species and cultivars only in the XXI century. The purpose of this investigation is to identify the most long-flowering spuria iris cultivars with a new color of flowers of various blooming periods. From 39 SPU cultivars, 15 cultivars bloomed within three years. Their optimum terms of blooming beginning were: in 2016 – 26.06 ±3, in 2017 – 25.06 ±2, only after cold spring in 2018 – 8.07 ±4. SPU class cultivars formed 3 ±2 flower stalks in 2-year-old bushes and 4 ±3 flower stalks in 3-year-old bushes, only Frigia had 10 flower stalks. Blooming of 15 2-yearold and at 3-year-old cultivars is 20 days. Perspective cultivars of different colors are: ‘Frygia’, ‘Lenkoran’, ‘Clara Ellen’, ‘Bay of Silk’, ‘Bronzing’, ‘Wyoming Cowboys’, ‘Gold Mania’ and ‘Handsоme Is’.
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ISSN 2225-3068

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