Influence of Metal Nanoparticles (NPs) on Germination and Yield of Oat (Avena sativa) and Berseem (Trifolium alexandrinum)
Proceedings of the National Academy of Sciences, India Section B: Biological Sciences - Tập 88 - Trang 595-607 - 2016
Tóm tắt
Assessment of effect of nanoparticles on plant growth is essential before adopting nanotechnology in agricultural sector. Four types of metal/metal oxide nanoparticles (NPs) viz. Zinc oxide (ZnO), Titanium oxide (TiO2), Copper oxide (CuO) and Silver (Ag) were studied for their effect on seed germination, vigour and yield in fodder crops, oat and berseem. Nanoparticles were synthesized and characterized before seed treatment. Seeds were treated with NPs at 750 mg (D1), 1000 mg (D2) and 1250 mg/kg of seed (D3). The effect of nanoparticles on seed germination and vigour was studied in the laboratory and seedling emergence rate, tiller number and seed yield were studied in the field. Nanoparticles (except TiO2 and CuO in berseem) enhanced germination at lower dose (D1), but reduction in root and shoot length was noticed at higher doses (D2 and D3). All four types of nanoparticles (NPs) in oat and only Ag in case of berseem enhanced germination to 100 % at lowest dose (D1). Substantial changes were noticed in field observations due to nanoparticle treatments regarding seedling emergence rate, tiller number and seed yield. Among the different NPs, TiO2 produced maximum seed yield at highest dose. No significant effect of nanoparticles on soil microbial populations was noticed during the field study. The experiment confirmed the dose-specific effect of nanoparticles on seed germination, crop growth and seed yield in oat and berseem crops.
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