5 research outputs found
A Framework to Plot and Recognize Hand Motion Trajectories towards Development of Non-tactile Interfaces
No full textAbstractThis work demonstrates a real time framework to recognize trajectories articulated in the air using bare hand motion. A frontend is established to plot the trajectories as well as to spot the interleaved dynamic gestures. Finger detection based controls and trajectory plotting velocity help to spot the gesture boundaries. Trajectories are described through a unique Equi-Polar Signature (EPS) derived from circular grid normalization of trajectory points. EPS is invariant to translation, scale, rotation and stroke directions. k-Nearest Neighbor (KNN) classification strategy recognizes EPSs of digits 0-9 and operator symbols ‘+’, ‘–’, ‘×’, and ‘/’. Unlike previous path alignment algorithms, the proposed EPS scheme executes in linear time and fits to real-time constraints. On a customized depth video dataset of 2280 trajectories, 94.1% recognition accuracy is achieved
Effect of Different Concentrations of Sodium Nitroprusside on Plant Growth and Flowering Characters in California Poppy
No full textIn the present study, the effect of different concentrations of sodium nitroprusside on plant growth and flowering characters in California poppy plants was investigated. The field experiment was carried out during 2021-2022 at Horticulture Research Farm, Department of Horticulture, Institute of Agricultural Sciences, Banaras Hindu University, Varanasi. There were 8 treatments of sodium nitroprusside (200, 400, 600, 800, 1000,1200, 1400 and 1600μM), including control. All the growth and flowering parameters of California poppy were significantly influenced due to various levels of SNP. All the growth parameter was statistically influenced by the application of SNP. Maximum fresh weight of the flower (9.96 g) and dry weight of the flower (1.27 g) were observed with treatment SNP 1000μM. Whereas, maximum bud diameter (8.75 cm), peduncle length (20.32 cm), flower diameter (66.96 mm), number of flowers per plants (106.17) and flower withering (4.97 Days), earlier flower opening (73.89 DAT), maximum plant height at 90 DAT (52.49 cm), plant spread (76.30 cm) at 90 DAT, number of leaves of per plant (865.38), number of secondary branches (110.58), stem diameter (9.70 mm) and dry weight of leaves (1.48 g) were recorded with SNP @ 1200μM. Maximum bud appearance (74.58 DAT) was seen with treatment SNP 1400μM
Evaluation of Portulaca (Portulaca grandiflora) for Vegetative, Floral Traits and Precision Environment
No full textPortulaca oleracea (common purslane), is valued for its nutritional and medicinal properties, being rich in omega-3 fatty acids, vitamins and antioxidants. The plant thrives in warm climates with well-drained soil and requires full sunlight for optimal blooming. Recent studies highlight its medicinal and economic potential. This study explores their botanical characteristics, cultivation requirements and applications in horticulture and medicine, emphasizing their significance in sustainable agriculture and skincare industries. The experiment was conducted during the Kharif season of 2024–2025 at the Department of Horticulture, Rajasthan College of Agriculture, MPUAT, Udaipur, to evaluate the vegetative and floral traits of eight genotypes of Portulaca grandiflora. The genotypes (PG-1, PG-2, PG-3, PG-4, PG-5, PG-6, PG-7 and PG-8) were planted in a Completely Randomized Design with ten replications in 6-inch plastic pots containing a 2:1:1 (v/v) mixture of soil, sand and vermicompost. Results revealed significant genotypic variation across all traits. The genotype PG-5 consistently performed best, recorded maximum vine length at 30, 60 and 90 DAP (24.02 cm, 27.18 cm and 30.05 cm), plant spread east to west and north to south (21.29cm and 21.68cm), earliest flower bud appearance (27.18 days), bud break (33.15 days), buds per plant (29.38), flowers per plant (29.13), flower weight (0.83 g), petals per flower (38.35) and longest flower duration (85.85 days). PG-1 recorded the highest leaves /branch (35.35), leaves /plants (312.13), branches /plant (12.15) and chlorophyll content (2.30 mg). The study identified PG-5 and PG-1 as promising genotypes for pot plant, ornamental and landscape purposes. Environmental analysis indicated that optimal performance occurred under 26.6°C temperatures, 3.8 hours of sunshine, moderate relative humidity (83.3%) for the vegetative phase and 27.7°C temperatures, 4.5 hours of sunshine, relative humidity (73.9%) for floral phase. The findings can assist in the selection of climate-resilient Portulaca grandiflora genotypes with high ornamental potential. The study contributes valuable insights for breeders, floriculturists and landscape designers seeking climate-resilient and low-maintenance flowering plants with commercial and ecological potential
Isolation and Molecular Characterization of Biosurfactant Producing Bacteria
No full textBiosurfactants are surface-active compounds produced by microorganisms with broad environmental and industrial significance. Due to their amphiphilic structure, biodegradability, and production from renewable sources, biosurfactants are emerging as sustainable alternatives to synthetic surfactants. This review provides a comprehensive overview of the recent advancements in the isolation of biosurfactant-producing bacteria, screening techniques, molecular characterization, and diverse applications in agriculture, bioremediation, and healthcare. Special attention is given to microbial strains isolated from oil-contaminated environments, their plant growth-promoting (PGP) attributes, metal tolerance, and antimicrobial potential. The review also outlines screening protocols and biochemical techniques to identify potent strains, and discusses their role in sustainable agriculture and ecological restoration
Corm and Cormlets characterization of Novel Hybrids of Gladiolus (Gladiolus hybrida) in off-Season
No full textThe present study was conducted during 2024-25 at the Horticulture Farm, Rajasthan College of Agriculture, MPUAT, Udaipur, to evaluate the performance of nine novel gladiolus hybrids under off-season conditions. The study aimed to assess their corm production traits to identify superior genotypes suitable for off-season cultivation. Significant variation was observed among the hybrids for all studied parameters. Hybrid H5 ♀ GS-2 × ♂ Arka Amar recorded highest corm diameter (3.94 cm), corm weight (23.60 g), final corm weight (23.60g) While H6 ♀ Gunjan × ♂ Dhanvantari recorded highest corm / plant (1.87) and cormlets / plant (5.93). Furthermore, hybrids H5 ♀ GS-2 × ♂ Arka Amar and H8 ♀ GS-2 × ♂ Pricella demonstrated promising results for corm diameter and weight indicating potential for commercial multiplication
