| Summary: | This study was conducted to investigate the effects of different treatment with ultrasound and stratification of Laurocerasus officinalis L. seeds, conducted in greenhouse conditions during the period 2013-2015. The Laurocerasus officinalis L. is a species with an economic importance for the pharmaceutical industry, and it is also often used in ornamental horticulture. The determination of appropriate conditions for propagation by seeds has an effect on the cost of production. The seeds were treated with 0, 5, 10 and 5 min ultrasound and 2 months stratification. The results showed that the percentage of germinated seeds and quality root system are dependent on the exposition time. The largest number of germinated seeds was obtained with ultrasound treatment of 10 min. The stratification resulted in the obtaining of roots with the greatest length. High doses of ultrasound will provide the breaking of seeds and weak, brittle root system, which reduces the chances of successful adaptation in replanting.
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