Effect of TiO2 spraying on growth parameters of Dracocephalum moldavica L.

Nanoparticles are particles of which at least one dimension is between 1 and 100 nm. Titanium dioxide nanoparticles can stimulate cell division, increase cell size, increase light absorption and photosynthesis and so increase plant growth. In order to study the effects of spraying Titanium dioxide particles on growth features of Dracocephalum moldavica L., an experiment was carried out based on randomized complete block design with three replications under laboratory conditions. Treatments consisted of control (non-spraying), spraying concentrations of 50 and 100 ppm NPs at the stage of six adult leaves. According to the results, root length in concentrations of 50 and 100 ppm NPs reduced significantly. In 50 ppm concentration,the fresh and dry weight of root increased significantly. Shoot length and fresh and dry weight in both concentrations of 50 and 100 ppm increased significantly. This study showed that spraying 50 ppm concentration of Titanium dioxide nanoparticles improve growth of Dracocephalum moldavica L. plant

کلیدواژه ها:

Dracocephalum moldavica L ، Nanoparticle ، Titanium dioxide ، Growth features