Mitigation of Salinity Stress by Application of Plant Growth Promoting Substances in Rice

Aim: Salt stress adversely affects plant growth and development. Various mitigating strategies have been employed to enhance the adaptability of plants salt stress. The present study was conducted with objective evaluating recently developed CO55 rice variety's ability withstand salt-induced during seedling growth. This evaluation included foliar spraying promoting substances like melatonin, salicylic acid, silicon, selenium, along identification effective growth-promoting that exhibit tolerance salinity. is required develop salt-tolerant varieties capable withstanding salinity stage. stage more susceptible salinity, also increase yield rice, thereby satisfying country's agricultural needs.
 Study Design: Completely randomized design.
 Place Duration Study: Department Crop Physiology, Tamil Nadu Agricultural University, Coimbatore; March-April 2023.
 Methodology: In hydroponics experiment, variety subjected various such as orthosilicic sodium selenate. Parameters leaf drying score, osmotic potential, adjustment, content, potassium Na+/K+ ratio were assessed. One-way ANOVA used analyze data.
 Results: Specific pairwise differences between means assessed at 0.05 significance level using Fisher's least significant difference (LSD) test. Among treatments applied, acid recorded highest content (3.94%), lowest (2.60%) found in acid. On other hand, from standard it observed seedlings be tolerant when treated whereas under treatment.
 Conclusion: Observations indicated application concentrations 50µM 100µM exhibited higher towards stages.