Browsing by Author "Chakraborty, Payal"
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ThesisItem Embargo Effect of nutri-priming on physiological, biochemical parameters and yield attributes in wheat (Triticum aestivum L.) for mitigation ofterminal heat stress using salts of boron.(Department of Plant Physiology Institute of Agricultural Sciences Banaras Hindu University Varanasi, 2022) Chakraborty, Payal; Chakraborty, Payal; Dwivedi, P.; Dwivedi, P.The present experiment was carried out in three stages, stage one was named as experiment 1 in which screening was done to determine the ideal concentration of the two boron salts, boric acid and borax for two wheat varieties, HUW-468 (Temperature sensitive, V1) and HUW-510 (Temperature tolerant, V2). Except for germination percentage, which was determined at 24, 48, 72, 96, and 120 hours after germination, data for each morpho-physical and biochemical parameter were recorded at 3, 5, 7, and 9 days of investigation.In experiment I, treatments included non-primed, hydroprimed, 2, 4, 8 10mM boric acid, 0.5, 1.0, 1.5, and 2mM borax salts represented as P1, P2, P3, P4, P5, P6, P7, P8, P9 and P10, respectively. After screening it was found that P5 and P10 showed best result for both the wheat varieties HUW-468 and HUW-510. Stage two and three were named as experiments II and III, which were conducted during Rabi season during 2019-20 and 2020-21, respectively in pots kept inpolyhouse. Two different sowing conditions, i.e., timely and late sown conditions, with two different genotypes of wheat, HUW-510 and HUW-468 were considered for the study.Crop planted too late (IInd fortnight of December)caused heat stress condition for the experiments. The best concentrations of boric acid (P5) and borax (P10) from experiment I were considered for priming in experiment II and III to evaluate the effect of nutrient priming on physiological, biochemical, antioxidants and yield properties of wheat during heat stress condition. For experiment II and III, treatments includedC1; non-primed seed (control), C2; hydro-primed, C3; 8mM boric acid primed and C4; 2mM borax primed ones.At 30, 60, and 90 days after sowing (DAS), observations regarding physiological, biochemicaland antioxidant parameters weredetermined, whereas data regarding developing grains were observed at 70, 80 and 90 DAS, and regarding yield and yield attributes,data were recorded at the time of harvesting. Overall, from all these aforementioned parameters, late sown treatment declined in all the above mentioned parameters, and it was also found that C3 performed better for Variety V1, and C4 showed best result for variety V2; nutri-primed (C3 and C4) sets performed better than the non-primed (C1) and hydroprimed(C2) sets in both timely and late sown conditions.ThesisItem Open Access Nutrient management in finger millet through organic sources(Department of Agronomy, OUAT, Bhubaneswar, 2020) Chakraborty, Payal; Paikaray, R. K.; Behera, B.; Mishra, K. N.A field experiment was conducted during kharif 2019 at Agronomic Main Research Station, Odisha University of Agriculture & Technology to find out nutrient management in finger millet through organic sources. The experiment was laid out in a complete randomized complete block design replicated thrice with ten treatments viz. T1 - 8t/ha FYM, T2 - 4t/ha FYM, T3 -T2 + 125 l/ha waste decomposer, T4 - T2 + 15kg/ha sea weed extract, T5 -T2 + 15 kg/ha wild ark with sea weed extract, T6 -T3 + 15 kg/ha sea weed extract, T7 - T3 + 15 kg/ha wild ark with sea weed extract, T8 - T6 + 4 kg/ha Growth G, T9 - T7 + 4 kg/ha Growth G and T10 - control. The soil of the experimental plot was sandy loam with pH 5.34, EC 0.045dsm-1, organic carbon 0.42%, available nitrogen 238.2 kg/ha, available phosphorus 17.2kg/ha and available potassium 147.8 kg/ha. Finger millet variety “Arjuna” was the test crop. The study revealed that application of 8t/ha FYM produced maximum finger millet grain yield of 2821 kg/ha. This higher production was associated with better growth and development of the crop particularly in terms of more number of earheads hill-1(5.2), more number of fingers earhead-1(6.4), higher spikelets per finger(68.3),more grains spikelet-1(5.7)and higher test weight(3.36g). At this level of production and nutrient source(8t/ha FYM), finger millet removed about 61.1 kg nitrogen, 13.9 kg phosphorus and 63.6 kg potassium/ha. Soil available N improved by 21.9 kg/ha, available P by 4.7 kg/ha and available K depleted by 0.6 kg/ha due to 8t/ha FYM. This also recorded maximum net return of Rs.36, 309/ha and higher benefit-cost ratio of 1.80. However, the effect of 8t/ha FYM was at par with 4t/ha FYM + 125 l/ha waste decomposer + 15kg/ha wild ark with sea weed extract + 4kg/ha Growth G with respect to grain yield, nutrient removal , soil fertility change, net return and benefit cost ratio.ThesisItem Open Access Study of seed germination, seedling growth & physico chemical parameters of wheat using magnesium nitrate and boric acid primed seeds.(Department of plant physiology, Banaras Hindu University Varanasi, 2018) Chakraborty, Payal; Bose, BandanaExperiment was carried out in three stages, stage one was named as experiment 1 in which wheat seeds of var HUW-468 were soaked for 12 hours in four different concentrations (ranging from 2.0 to 10 mM )of Boric acid (H3BO3), and then dehydrated under forced air to find out the effects of Boron priming on germination. Treatments are (T0)- control non primed seeds, (T1)- seeds primed with 2mM boric acid, (T2)- seeds primed with 4mM boric acid, (T3)- seeds primed with 8mM boric acid,( T4)- seeds primed with 10mM boric acid. Each treatment has four replications. Various parameters like germination percentage, plumule , radicle and seedling lengths, fresh and dry weights of radicle and plumule, alpha amylase activity, soluble sugar contents were determined at 3, 5, 7 and 9th days during germination and seedling growth and compared with non- primed control. Experiment 1 was performed to get the best boron concentration and after that Experiment 2(A) was conducted in which the same above parameters were studied by taking treatments like (C0)-non primed seeds (control), (C1)- seeds primed withMg(NO3)2 (7.5 mM), (C2)- seeds primed with H3BO3 (8mM), (C3)- seeds primed with H3BO3& Mg(NO3)2, (C4)- seeds primed with distilled water (hydroprimed). Experiment 2(B) was carried out by taking leaf samples from 30, 45, 60th days old plants planted in pots and data was collected based on biochemical parameters like chlorophyll, proline, protein & SOD contents and nitrate reductase activity along with SDS PAGE protein profiling. The work has been discussed on the basis of priming effects of magnesium nitrate and boron either used alone or in combination to wheat variety HUW-468.