Oil bearing roses are traditionally grown in regions like the famous “rose valley” in Bulgaria where the climate is known to be favorable for high rose flower and essential oil yield. However, environmental conditions could vary within the microregions of the rose valley as well as between years. In the current study four oil rose cultivars (cv. Yanina, cv. Elejna, cv. Iskra and cv. Svezhen) have been evaluated for the stability and adaptability of the yield of fresh flower and essential oil. The adaptive potential and response of the four cultivars to unfavorable environmental conditions are discussed. The study is a first step for implementing targeted distribution of oil rose planting material to different microregions of the “rose valley” and other rose growing regions.

Adaptive possibility and yield stability of varieties oil-bearing roses

N. Kovatcheva, K. Rusanov, I. Atanasov