Effect of Different Nanoparticles on Seed Germination and Seedling Growth in Rice

摘要

The aim of this study was to investigate the phytotoxicity of Fe_2O_3 nanocubes, Fe_2O_3 short nanorods, Fe_2O_3 long nanorods, TiO_2 NPs; and MWCNTs to rice (Oryza sativa L.) seedlings during germination, including rice germination ratio, root length, shoot length and fresh weight. Our investigation found that all nanoparticles inhibited the germination of rice seeds. Fe_2O_3 nanocubes, Fe_2O_3 short nanorods, Fe_2O_3 long nanorods and TiO_2 NPs all significantly promoted the root length, and stimulated shoots growth at most concentrations, but had no obvious effect on fresh weight. Our study showed a comprehensive understanding of nanoparticles toxicity during plants germination. To our best knowledge, it was the first time to investigate the influence of Fe_2O_3 nanomaterials morphologies on plants germination.