| Abstrakt: |
Zinc nanomaterial is used in many applications. It is also characterized by the spread of pollution at high concentrations. The responses of plants to changes in concentration and finding the ideal effect were studied and their results were analyzed. Dose of Zinc Oxide nanoparticles (Z) were (0–600 mg/l), in biomarkers of chlorophyll and carotene in three of wild plants (Lepidium sativum, Peganum harmala and Portulaca oleracea), in Najaf, Iraq, 2022. The result showed different concentrations (0-600 mg/l), for a period of 30 days. To compare between the studied plants in total chlorophyll concentrations when using concentrations (0, 150, 300 and 600) mg/l, 300 mg/l were the highest value and the 600 mg/l was lowest value Figure 7. The highest values appeared in a plant Lepidium sativum, and the lowest values appeared in a plant Portulaca oleracea. The comparison between the carotene content was similar with the chlorophyll content in the Lepidium sativum plant. As for the Peganum harmala plant, it was not affected much. While the Portulaca oleracea plant recorded the highest value in 600 mg / l and the lowest value in 300 mg / l, and this indicates the variation in the response of the studied plants to the doses of nano-zinc according to the different types of plants. The results indicate that insufficient supply of Z (150 mg/l) could be a plant growth stimulator and the results can be used in practical applications to increase production and improve crops as fertilizer. Whereas, treatments with high concentrations inhibited the biosynthesis of chlorophyll, which leads to a decrease in the efficiency of photosynthesis in plants. The effect of Z on three wild plants for the purpose of demonstrating the responses of plant pigments chlorophyll and carotene as effective biomarkers for increasing the concentration of nanomaterials in the ecosystem. [ABSTRACT FROM AUTHOR] |
