Open Access
ARTICLE
Effects of Nano-Cerium Oxide on Seed Germination and Seedling Growth of Vitex negundo
Zi Yang, Shixian Fan, Xuehan Wei, Zhiming Zhang, Xin Gui*, Yong Zhao*
College of Forestry, Henan Agricultural University, Zhengzhou, 450002, China
* Corresponding Authors: Xin Gui. Email: ; Yong Zhao. Email:
Phyton-International Journal of Experimental Botany 2020, 89(4), 893-903. https://doi.org/10.32604/phyton.2020.013644
Received 15 August 2020; Accepted 07 September 2020; Issue published 09 November 2020
Abstract
Cerium oxide nanoparticles (CeO
2NPs) are likely to have dramatic
impacts on plant performances, yet the effects of CeO
2NPs on seed germination
and seedling growth have not been fully explored. In this study, the seed germination and seedling growth of subshrub species
Vitex negundo under different
concentrations of CeO
2NPs (low-1 mg/L, medium-100 mg/L, high-500 mg/L)
have been discussed. Results showed that: (1) The seed germination rate reduces
by 11.25% and 2.5% under the low and medium concentrations of CeO
2NPs,
respectively, but increased by 7.08% under the high concentration; (2) CeO
2NPs
had significant effects on the growth traits (root length, shoot height and biomass)
of seedlings, being the highest under the medium concentration and the lowest
under the highest concentration; (3) The superoxide dismutase activity was the
maximum (355.91 U/g), but the protein concentration was the minimum
(3.85 ug/mL) under the high concentration of CeO
2NPs. Our results indicated that
the effects of CeO
2NPs on seed germination and seedling growth are concentrationdependency, i.e., low and medium concentrations inhibited while high concentration promoted seed germination, however, seedling growth showed opposite
responses. Therefore, appropriate CeO
2NPs concentrations are beneficial to
the seed germination and seedling growth of
Vitex negundo and improve the
physiological performance of seedlings and enhance their adaptability to
environmental adversity.
Keywords
Cite This Article
Yang, Z., Fan, S., Wei, X., Zhang, Z., Gui, X. et al. (2020). Effects of Nano-Cerium Oxide on Seed Germination and Seedling Growth of
Vitex negundo.
Phyton-International Journal of Experimental Botany, 89(4), 893–903. https://doi.org/10.32604/phyton.2020.013644