SEEDLINGGROWTHOF GROUNDNUT

This study investigated the effect of different concentrations of selenium (Se) on the germination and early growth of Arachis hypogaea (groundnut). Selenium, an essential micronutrient for humans and animals, is known to enhance antioxidant activity and stress tolerance in plants at optimal levels, but becomes toxic when applied excessively. This study was conducted in the Department of Plant Biology and Biotechnology, University of Benin, using five treatments: 0g/L (control), 1.5 g/L, 2.5 g/L, 5 g/L, and 10 g/L sodium selenite solutions, with seed priming durations of 3, 6, and 9 hours. Parameters measured included germination rate, radicle length, stem girth, shoot length, and number of leaves. Results showed that moderate Se concentrations(1.5 g/L and 2.5 g/L) improved germination and growth relative to the control, while higher concentrations (5 g/L and 10 g/L) significantly reduced these parameters, indicating toxicity at elevated levels. The findings suggest that selenium at low concentrations can enhance seed germination and early seedling vigour in groundnut, but excessive application inhibits growth. This study underscores the importance of optimizing selenium use in groundnut cultivation to enhance yield.