The effect of silver nanoparticles on cytogenetic index in 6 cultivares of barley crop

Nanomaterials are a part from an industrial revolution to develop lightweight but strong materials for a variety of purposes. The toxic effects of nanoparticles have been evaluated in a variety of studies; however the potential health and environmental impacts on plants have yet to be thoroughly examined. This research were performed to evaluation the nano silver effect on cytogenetical indices of deviation cells in 6 barely cultivars. Seeds germination in various concentrations of nano silver (0, 1 percent, 5 percent and 10 percent Molar) was performed in factorial design based on completely randomized design. The traits of mitotic index, metaphase index and chromosome deviation index were measured. The results of variance analysis were showed a significant difference between various concentrations of nano particle for studied characters at 1 percent level. Significant difference was observed between cultivars only for mitotic index at 5 percent level. The compare means by Duncan's methods revealed that the traits of mitotic index and metaphase index were significantly increased by increasing concentrations of nanoparticles up to 5 percent and at 10 percent concentration, a significant decrease were observed for both indices. For the chromosome deviation index the highest level were observed for 1 percent concentration and the chromosome deviation index were significantly decreased at the 5 percent and 10 percent concentrations. In addition, in barley cultivars, the lowest concentrations of nanoparticles (1 percent and 5 percent) increased the mitotic index, metaphase index and chromosome deviation index and 10 percent concentration were decrease the amount of studied indices, compared to check treatment. It seems that nano silver has potential of creating damage to genetic material and attention to security aspects and environmental has specific importance.