Abstract
In present study, effect of seed priming with nanomaterials (SiO2 nanoparticles and MWCNT) on agronomic traits of barley (Hordeum vulgare L.) was studied. Barley seeds were primed separately with different concentrations (25 – 125 μg/ml) of SiO2 nanoparticles (NPs) and OH functionalized MWCNTs. The germination potential increased at higher concentration (50 – 125 μg/ml) of nanomaterials and was maximum in seeds primed with SiO2 NPs. Plant height showed strong positive correlation (r = 0.75) with SiO2 NP concentration and tallest plants (upto 85 cm) developed from seeds treated with higher concentration of SiO2 NP (125 μg/ml) and OH-MWCNT (75 μg/ml). Further, average length of flag leaf (27.8 cm), peduncle (14.4 cm) and spikelet (16.7 cm) were maximum at 25 μg/ml OH-MWCNT, 100 μg/ml SiO2 NP and 100 μg/ml OHMWCNT, respectively. The average grains per spikelet was 4 to 6 times higher in plants developed from SiO2 NP primed seeds, while biomass was approximately 1.2 to 1.4 times higher in OH-MWCNT primed seeds. Maximum yield of 179 grains per spikelet and 2084 mg fresh weight was recorded at 50 – 75 μg/ml SiO2 NP and 75 μg/ml OH-MWCNT, respectively. Bio-chemical profiling further confirmed better response of the plants generated from seeds primed with moderate to high concentrations of SiO2 NPs. The free radical scavenging activity was higher in vegetative stages of all the treated plants and maximum activity was exhibited by plants of SiO2 NP treated seeds. Therefore, priming of barley seeds with SiO2 NPs can be an effective non-invasive approach to enhance growth and yield of such an economically important crop.
doi: 10.17756/nwj.2022-s1-002
Citation: Poonia R, Jain R, Ul Haq S, Kachhwaha S. 2022. Effect of SiO2 Nanoparticles and MWCNT Priming on Agroeconomic Important Traits and Biochemical Profile of Hordeum vulgare L.: A Comparative Study. NanoWorld J 8(S1): S6-S10.
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