Effect of zinc nano particle on physiology of finger millet [Eleusine coracana (L.)] under saline condition
| dc.contributor.advisor | Kumar, Shailesh | |
| dc.contributor.author | SHAILENDRA, BUTE PARESH | |
| dc.date.accessioned | 2023-01-07T07:38:37Z | |
| dc.date.available | 2023-01-07T07:38:37Z | |
| dc.date.issued | 2022 | |
| dc.description.abstract | Numerous abiotic stressors have significantly impacted crop development and productivity, Salinity is one of them which affect around 50% of irrigated area as well as 20-33% of cultivated areas all around the world. Therefore, creating fresh methods for crop improvement against several stresses has now taken precedence. However, the majority of crop development efforts are focused on major cereals like rice, wheat, maize, and others, while attention to minor cereals like finger millet [Eleusine coracana (L.).] lags significantly. It is a vital staple with good nutraceutical characteristics in many semi-arid and tropical regions of the world, ensuring food security even in hard environments.Nanotechnology has been shown to be an emerging trend to alleviate salinity stress. Zinc nanoparticles due to its unique properties acts as fertiliser releasing Zn, a potential micronutrient through which negative effects of salinity could be mitigated, potentially increasing crop productivity and fostering growth and development. The present research is termed, “Effect of zinc nano particle on physiology of finger millet [Eleusine coracana (L.)] under saline condition”, was performed with aim to determine how salt affects the development and growth of finger millet seedlings and to recognise ZnO nanoparticle’s ameliorative effects on morpho-physiological characteristics of finger millet seedling. 7 In first objective, thirty genotypes of finger millet viz., RAUF-1, RAUF-2, RAUF-3, RAUF-4, RAUF-5, RAUF-6, RAUF-7, RAUF-8, RAUF-9, RAUF-10, RAUF-11, RAUF-12, RAUF-13, RAUF-15, STF-1, STF- 2, STF-3, STF-4, STF-5, STF-6, STF-7, STF-8, STF-9, STF-10, STF- 11, STF- 12, RAU-8, RAU-3, BR-407 and Rajendra Mandua-1 were tested at salinity level at 4.30 dSm-1 EC. Based on emergence percentage, seedling length and seedling dry weight in 12-day-old plants, genotype screening was carried out, and contrasting genotypes were chosen. Salinity has significantly decreased the aforementioned parameters, with BR-407 experiencing the lowest percentage reductions and higher in RAU 8.In the second goal, seeds of a chosen set of genotypes were primed using ZnO nanoparticles at various concentrations (50, 100, 250, 500 and 1000 ppm). The genotypes were grown in both normal and saline soil conditions, and 14-day-old seedlings of both genotypes were evaluated for morpho-physiological parameters as emergence percentage, shoot and root length, shoot and root dry weight, and SPAD value. The findings showed that in both normal and saline soil conditions, ZnO nanoparticles at 250 ppm concentration have an enhancing effect on those previously mentioned parameters. Additionally, there was a promoting impact at doses of 50 and 100 ppm; however it was not quite as effective as at the higher dosage. High quantities of nanoparticles have shown harmful effects that point to phytotoxicity. Thus, the consequences of salinity stress were mitigated to their greatest extent at 250 ppm concentration.In the third goal, ZnO nanoparticles' effects on morphological (plant height, dry matter accumulation, root study), physiological (RWC, MSI, photosynthetic pigments, SPAD value, chlorophyll stability index, lipid peroxidation) and biochemical parameters (antioxidant enzymes like Super oxide dismutase, Ascrobate peroxidase, catalase and proline content) of 21-day-old finger millet seedlings of both genotypes are characterized. All of the aforementioned characteristics were negatively impacted by salinity stress, which ZnO nanoparticles could help to reduce or lessen. ZnO has better relieving potential at a concentration of 250 ppm. According to the current research, salt had negative impacts on the development and growth of finger millet seedlings, which might be mitigated by seed priming with ZnO nanoparticles. When applied to finger millet, ZnO nanoparticles at a concentration of 250 ppm had a positive influence on the plant's morpho-physiological and biochemical parameters. As a result, nanoparticles may soon be used more effectively as fertilizers or stress relievers. | en_US |
| dc.identifier.other | M/BPP/560/2020-2021 | |
| dc.identifier.uri | https://krishikosh.egranth.ac.in/handle/1/5810191471 | |
| dc.keywords | zinc nano, particle, physiology, finger millet, Eleusine coracana (L.), saline condition, Plant Physiology. | en_US |
| dc.language.iso | English | en_US |
| dc.pages | 123+xvi (Bibliography) | en_US |
| dc.publisher | DRPCAU, PUSA | en_US |
| dc.sub | Plant Physiology | en_US |
| dc.theme | Effect of zinc nano particle on physiology of finger millet [Eleusine coracana (L.)] under saline condition | en_US |
| dc.these.type | M.Sc | en_US |
| dc.title | Effect of zinc nano particle on physiology of finger millet [Eleusine coracana (L.)] under saline condition | en_US |
| dc.type | Thesis | en_US |