Abstract
Zinc oxide (ZnO), Silver (Ag) and Titanium dioxide (TiO2) nanoparticles were synthesised using template-free aqueous solution based on simple chemical route which were characterised through SEM, TEM and XRD. Size of Zinc oxide (ZnO), Silver (Ag) and Titanium dioxide (TiO2) nanoparticles measured 35-45nm, 20-80 nm and 85-100 nm, respectively to conform the nano-size. Groundnut seeds when dry dressed with the synthesised nanoparticles each at 500, 750, 1000 and 1250 mg kg -1, the dose of 1000 mg kg-1 outperformed in enhancing the germination (75%), shoot length (20.97 cm) root length (17.98) and thereby the vigour index (2949) compared to control (55%, 16.92, 15.21 and 1759) respectively.
Highlights
In India groundnut constitutes roughly about 50 per cent of the total oilseed production
VRI 2 stored under ambient conditions (25 ± 3°C temperature and 95 ± 3% RH) for 13 months at the Department of Seed Science and Technology, TNAU were shelled and the kernels were dry dressed with nanoparticles of Zinc oxide (ZnO), Ag and TiO2 each at 500, 750, 1000 and1250 mg kg-1 in screw capped glass bottles at room temperature
Nanorods appeared like a petals radiating from a flower (Figure 1a) measuring 50–80 nm diameter supporting the study reported by Moghaddam[9]; while Ag nanoparticles appeared like a bundle of needle each having a diameter of 400–450 nm (Figure 1b), a similar observation made by Sileikaite[14]
Summary
In India groundnut constitutes roughly about 50 per cent of the total oilseed production. Seed viability is getting lost quickly due to the production of free radicals by lipid peroxidation during storage. As the current technologies available to prolong the vigour and viability of groundnut seed on a large scale are not satisfactorily alleviating the practical problem, an alternative simple and practicable seed treatment to control seed deterioration of groundnut is need of the hour. Kumar[12] observed positive impact of ZnO and Zero Valent Ion (ZVI) nanoparticles as wet and dry treatments on black gram seeds for physiological characters (germination, seedling growth and vigour index) and biochemical traits (electrical conductivity, free amino acids, dehydrogenase activity and lipid peroxidation). The present investigation was made to study the effect of ZnO, Ag, and TiO2 nanopartilcle on the vigour and viability of groundnut seed
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