| Popis: |
To study the effects of metal-based nanoparticles on the germination and growth of vegetable seeds, an experiment was conducted in July 2017 to explore the effects of different zinc oxide nanoparticles(ZnO NPs)and zinc sulfate(ZnSO4)treatments(0, 50, 100, 200, 500, 700, and 1 000 mg·L-1)on germination performance and seedling growth of Raphanus sativus L. and Brassica chinensis L.. Results showed no significant difference in the germination rate between the two vegetable crops under different ZnO NPs and ZnSO 4 treatments(P>0.05)when compared with the control; while the biomass of both vegetables was inhibited. ZnO NPs and ZnSO4 inhibited the root length of both vegetables more than their shoot length. The inhibition rate of ZnO NPs on root elongation of both vegetables was greater than that of ZnSO4, while it increased with an increase in treatment concentration, reaching up to 98% at 1 000 mg L-1. However, ZnSO4 inhibited shoot growth of both vegetables much more than ZnO NPs. The results revealed that although ZnO NPs and ZnSO4 had no significant effect on the germination of both vegetables, they both inhibited the root length and shoot length to some extent. |
