The effect of titanium dioxide nanoparticles on barley cytogenetical index

Abstract

Titanium dioxide such as the other engineered nanomaterials has uncommon properties and if the various form of them to be released in the environment tobecome a new class of pollutants and a threat to public health and ecosystem. This research carried out to investigation of titanium dioxide nanoparticles effect on germination and cytogenetical trait of under division cells of Hordeum vulgar var valfajr under in vitro condition. Germination of barley seeds in the presence of different concentrations of titanium dioxide (10, 25, 50, 100 milligram per liter) was carried out in presence of -control and in form of random complete blocks design. Trait of germination speed, speed growth of radicle and plumule, length and number of root and stem also the index of mitosis, metaphase and chromosomal abbrations such as anaphase bridge, chromosome fragment, sticky telophase and micronuclei was measured. Result showed that titanium nanoparticle has significant effect on chromosome abberration of barley and induced abberration index in treated cells in compared with control while does not affect on other cytogenetical index and germination trait.It seems titanium dioxide nanoparticles is competent to damage of eukaryotic genetical material and bring notice to the environmental safety facet is important.

Keywords

• barley
• cytogenetically properties
• titanium dioxide nanoparticles