Abstract:
This study was conducted at the plant pathology laboratory Sudan University of Science and technology of college of agricultural studies during the period (November 2019 – April 2019). The aim of this study is to evaluate the inhibitory effect of aqueous extracts of two plants Ginger (Zingiber officinale) and cinnamon (Cinnamomheum verumis) on the growth of the bacterium Streptomyces spp in vitro. Different concentration s (5%, 10% and 20%) of each of the tested plant, in addition to penamox 2% (Amoxicillin) antibiotic were tested and compared to the untreated control H2O. Penamox 2% recorded the highest inhibitory effect (3.07).The result showed that all concentrations (5%,10%and 20%) of aqueous extracts of both plants were found to be significantly different (p ≤ 0.05) when compared to the untreated control (H2O) and the Penamox 2% and reducing the inhibitory effect by 2.6, 2.6 and 2.6 for ginger and 2.5 ,2.6 and 2.6 for cinnamon, respectively. The study concluded the antibiotic (Penamox 2%) is the most effective (3.07) followed by the different concentration by 2.6, 2.6 and 2.6 ginger and cinnamon 2.5.2.6 and 2.6 respectively. We recommended further studies to evaluate the effect of these plants on the growth of the bacterium under field condition.
