Comparative analysis of plant growth promoting activity of iron, silver and zinc oxide metal nanoparticles.
Keywords:
Metal nanoparticles, Solanum tuberosum, Daucus carota, Beta vulgarisAbstract
Nanotechnology is a developing field in science and technology with diverse applications. Among the different types of nanomaterials synthesised, metal nanoparticles are widely used due to their enhanced catalytic, chemical and other physical properties. The field of agriculture is undergoing major quest for innovative methods to enhance the productivity of the crops. Metal ions are vital in plant growth as macro and micro elements for carrying out a number of physiological processes. These metal ions in the form of nanoparticles with multi-faceted properties are most of the time promoting the plant growth. Growth and development of plants is known to be influenced by a number of metal oxide nanoparticles and there are many established studies indicating the improvement of plant systems in the presence of the metals as nanoparticles. A comparative study was carried out with biologically synthesized iron, silver and zinc oxide nanoparticles on the seed germination and plant growth in potted plants of potato (Solanum tuberosum), carrot (Daucus carota), and beetroot (Beta vulgaris). From the study it is evident that silver and zinc oxide nanoparticles have promoted early germination as well as increased the shoot length in potato plant when compared to iron nanoparticles. A significant increase in shoot length when compared to the control has been observed with zinc oxide nanoparticles. Simultaneously the effect on micro flora of soil has been analysed which showed an increased in the presence of iron and zinc oxide nanoparticles and decrease with silver nanoparticles. The statistical analysis by ANOVA test revealed that the significance value p < 0.05 which states that there is a significant impact of metal nanoparticles on plant growth.
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