4. Bioenergy Studies Symposium, Samsun, Turkey, 26 May 2022, pp.4-5
Determination of the Nutritional Effect of Sahara Dust on Lemna minor Living in Stagnant Waters
Adeleh Rashidi1 , Ahmet Cemal SAYDAM1 , Gökçen BAYSAL FURTANA2 1
Department of Environmental Engineering, Hacettepe University, Turkey 2 Department of Biology, Gazi University, Turkey
Abstract: In this study, the powders brought from Southern Tunisia/Sahara Desert and the solution called “Fertile Water” prepared with water and Lemna minor samples taken from the lake in Hacettepe, Beytepe campus and the greenhouse in Ankara University Biology Department were used. Sahara dust, which was brought from the Sahara Desert was used and therefore did not undergo atmospheric transport. A solution was prepared with soil and sterile distilled water to imitate the behavior of dust from the field in the cloud; Used for growing L. minors after standing in sunlight for about 120 minutes. The plants, which are the experimental material, were monitored for 21 days in containers containing " Fertile Water" solution prepared with Sahara dust and "Greenhouse Water", the natural environment water from which the samples were taken. The experiment was carried out with 3 replications and using 7 L. minors of equal size for each repetition. Average daily growth rate and increasing/yellowing leaf numbers were recorded in plants kept in a semi-controlled environment at 11-15 °C, 10 hours’ day/14 hours’ night cycle.As a result of the observations, it was determined that L. minors fed with " Fertile Water" solution showed a better growth of approximately 50% compared to greenhouse water; it was determined that leaf yellowing started 3 days later in this group. Due to these findings that chlorophyll remained active for longer in the desert dust group, so that the plant could produce more energy or fix more carbon sources.
Keywords: Sahara Dust, Lemna minor, Chlorophyll