Akademik Veri Yönetim Sistemi
Current Trends in Natural Sciences, cilt.11, sa.21, ss.104-111, 2022 (Hakemli Dergi)
The study was carried out to determine whether different concentrations of essential oil components (geraniol,
carvacrol, thymol, and alpha terpinene) and essential oil of thyme (Thymus vulgare) have any allelopathic effects on the
germination of barley seeds. The study was carried out in the laboratory environment according to the divided plots
experimental design in random plots. At the end of the experiment, the effects of allelochemical types of carvacrol,
thymol and geraniol doses on germination rate and seedling dry weight were found to be statistically significant
(p<0.01). It was determined that geraniol (0.00245 g), carvacrol (0.01790 g) and thymol (0.02590 g) had the most
negative effects on seedling dry weight, respectively. As a result, it was determined that some of the herbal
allelochemicals used were effective on the germination of barley seed and seedling growth, and the effect rate increased
as the dose increased. Thymol, geraniol and carvacrol showed the most negative effects on the germination rate of
barley seed at all doses. On the other hand, adverse effects were determined at high doses of alpha terpinene. All doses
of thyme essential oil and low doses of alpha terpinene showed similar effects with the control. As a result; It is thought
that essential oil components, which have a negative effect on the germination of barley seed, can be used in the
production of plant-based bio-herbicides.