Assessment By Phenological Stages Of Development And Decorative Properties Of Floribunda Roses Group For Further Use In Ornamental Gardening

Abstract

Goal. To study the main decorative features of the varieties of floribunda roses group and the duration of their manifestation for further use in the ornamental gardening of the Right-Bank Forest Steppe of Ukraine. Methods. Phenological - for the study of seasonal phases of development of varieties of roses; mathematical and statistical - for processing of obtained research results. The reliability of the obtained research results was determined by the methods of statistical analysis of Microsoft Office Excel 2010. Results. Based on the observations, the varieties of floribunda roses were selected according to the main features of decorative. It is revealed that originality of color of a variety is crucial when choosing a variety from one group of roses for their further use in ornamental gardening. The varieties with rare orange (Westpoint and Lilli Marleen) and purple (Minerva, Santa Monika and Let's Celebrate) and mottled pink (Mathias) color are the most attractive among other varieties. The duration of flowering of varieties is established.

As a result of the conducted researches the average duration of vegetation of rose varieties of floribunda group was determined, which was 231 days, with the longest duration in the Westpoint variety ‑ 234 days, and the shortest in the Minerva variety ‑ 215 days. The duration of flowering of varieties is established. In the vast majority of varieties it lasted 138 days. The longest blooming rose varieties of Arthur Bell, Westpoint, Rotkappchen, Iceberg and Santa Monika (150 days), the least - Carmagnola, Lilli Marleen and Minerva (120 days or less).