The effects of ZnO nanoparticles (NPs), ZnO microparticles (MPs), and zinc ions (Zn2+) on some growth parameters of rapeseed (Brassica napus) seedlings have been studied. The growth inhibition by ZnO NPs was not stronger than that by ZnO MPs while treatment with Zn2+ inhibition was clearly stronger.
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Kouhi et al. (2014) studied this question.
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