V. Badzhelova* Institute of Roses, Essential and Medical Cultures, 6100 Kazanlak, Bulgaria (Manuscript received 13 June 2022; accepted for publication 20 February 2023) Abstract. The potential for callus induction in the local population of Rosa damascena and Rosa alba was studied, an

A. Dobreva Abstract. It was raced the influence of acidity rate (pH=4 and pH=6) on the quantity and chemical composition of essential oil of Rosa damascena Mill. It was established that the yield is ranging 80 ÷ 110 % compared with control and the amount of the main terpene alcohols (

The dynamics of the essential oils of Rosa damascena Mill. and Rosa alba L. within a day period has been measured. It has been found that the two genotypes have the same rhythm in the release of volatile emissions. In the context of meteorological conditions the maximum of oil of the