http://ir.lib.ruh.ac.lk/handle/iruor/7341 2026-04-04T06:23:44Z http://ir.lib.ruh.ac.lk/handle/iruor/20561 Modes of Selenium Application in Agriculture: Efficacy and Issues Ratnasekera, D.; Bandara, D. M. A. D.; Madushanka, K. S. J.; Gunasekera, D.; Hemantha, H. H. Selenium (Se) is a micronutrient that plants require in trace levels to operate properly. Special agriculture, sometimes referred to as se-rich farming, that capability to boost crop productivity (Huang et al. 2023). Selenium presents in agricultural systems from all sources (Bano et al. 2021). Organic form or as elemental Se (Fe2(SeO3)3, and Na2SeO3) that’s main selenium source in soil (Yamada et al. 1999). SeO2−4 SeO2− 3 and are two highly soluble anionic type of selenium that plants may absorb, are typically found in soils (Dinh et al. 2019). Generally, garlic, onions, brassicaceae and some mushroom types have high Se concentrations, while the majority of agricultural crops have poor tolerances Se content as less than 50 mg/kg. (Yin et al. 2019). Plants selenium concentration can rise using Se fertilization (Kapolna et al. 2009; Broadley et al. 2010). According to many research investigations, judicious management of selenium, even at low amounts, can enhance plant development (Bano et al. 2021). 2025-01-01T00:00:00Z http://ir.lib.ruh.ac.lk/handle/iruor/20560 Seed Priming with Selenium (Bulk and/ Nano) in Agriculture: Stress Resilience Prospective Ratnasekera, D.; Madushanka, K. S. J.; Bandara, D. M. A. D.; Gunasekera, D.; Thilakarathne, W. L. S. M. I. D. M.; Arosha, K. P. L.; Amarasinghe, A. A. P. M.; Balasooriya, B. A. S. M. “Seed priming” is a pre-sowing strategy which modulate metabolic activities before radicle emergence by partial hydration of seeds (Rouhi et al. 2011) in materials use for priming followed by drying of seeds (Eskandari and Kazemi 2011). Rapid germination, boosting plant growth, raising the efficiency of nutrients and water usage, suppression of weeds (Raj and Raj 2019) and overall elevation of the seed performance are key accelerations due to seed priming. Seed priming guarantee the uniformity and better establishment which make ease of management practices of crop, ensure yield in diverse climatic conditions help to prevail dormancy (Choud hary et al. 2008; Agawane and Parhe 2015; Nawaz et al. 2013). Light, aeration, 2025-01-01T00:00:00Z http://ir.lib.ruh.ac.lk/handle/iruor/20559 Microbial conversion of Selenium: mitigation of abiotic stresses Ratnasekera, D.; Gunasekera, D.; Madushanka, K. S. J.; Bandara, D. M. A. D. Selenium (Se) is a vital mineral element in human health to prevent risk of many infections (Guo et al. 2023). Selenium’s critical role in human health and well being is well recognized, as it serves as a key constituent of 25 selenoproteins. Crop plants are the richest primary sources providing dietary Se to humans and soil is the main Se source of the plant (Liu et al. 2021). The primary sources of soil Se are volcanic eruptions and derivatives of anthropogenic activities and are crystal or solid forms. The dissociation and dissemination of Se from the primary root sources are important biogeochemical events of soil biogeochemical properties such as Se mobility and bioavailability and Se uptake by plants (Li et al. 2017). Se mobility and bioavailability determined by the redox potential and methylation-demethylation processors, mediated by soil properties, soil organic matter content and microbial activities (Guo et al. 2023) · 2025-01-01T00:00:00Z http://ir.lib.ruh.ac.lk/handle/iruor/16899 Comparison of Physio-Biochemical and Antioxidant Enzymes in Maize during Early Growth Stage in Response to Salt Stress Chattaha, M.U.; Khan, M.; Khan, I.; Mahmood, A.; Chattaha, M.B.; Hassan, M.; Soufan, W.; Okla, M.; Kumari, A.; Rathnasekara, Disna; Ali, B.; Shehata, M.; Elsabagh, A. Salinity stress is a major hazard to crops, severely restricting agricultural productivity around the world. Salt stress has a negative impact on the growth, physiological, biochemical, and metabolic processes of maize, resulting in a significant loss in final crop productivity. However, the maize genotypes differ significantly in terms of salinity tolerance. Therefore, this study was conducted to assess the impact of different salinity levels (control, 6 dS m-1, 12 dS m-1) on growth, and physio-biochemical traits of different maize hybrids (P-1543, FS-131, SB-9663, YH-1898, FH-1096, SB-794). The results delineated that salt stress (12 dS m-1) considerably increased the time to start germination (TSG), reduced germination index (GI), and final germination percentage (FGP). Moreover, salt stress (12 dS m-1) also reduced root and shoot growth, biomass production, chlorophyll contents, and relative water contents (RWC). Further, current results depicted that salt stress induced an increase in electrolyte leakage (EL) and activities of antioxidants (APX, CAT and POD). Similarly, the maize hybrids also had significant differences in germination, growth and physio-biochemical traits. In comparison, hybrids FH-1096 and YH-1898 required less TSG and had the highest GI and FGP, whereas hybrids P-1543 and FS-131 needed more TSG and had the lowest GI and FGP. Likewise, the maximum chlorophyll, RWC, carotenoid and antioxidant enzymes activities were recorded in hybrid FH-1096. However, minimum chlorophyll, RWC, carotenoid and antioxidant enzymes activities and maximum EL was noticed in hybrids P-1543, FS-131 and SB-9663. Thus, on the basis of these findings, it can be suggested that maize hybrids FH-1096 and YH-1898 can show tolerance under salt stress conditions. 2023-01-01T00:00:00Z