Effect of Accelerated Aging on Physiological Characteristics of Lentil Seeds

Deepak Rao1, Ravish Choudhary2*, Shiv Kumar Yadav2 and Sangita Yadav2*

Abstract

This study investigates the impact of accelerated aging (AA) on seed germination, seedling growth, and vigor indices in lentil seeds (Lens culinaris Medik.), a critical pulse crop contributing to India's protein supply. Seeds were subjected to four different AA treatments [40°C for 8 days, 42°C for 8 days, 40°C for 10 days, and 42°C for 10 days] and compared with a control. Key parameters, including germination percentage, shoot and root lengths, total seedling length (TSL), and vigor indices, were evaluated. The results revealed significant variations across the treatments. The control group exhibited the highest germination rate (92%) and TSL (31.38 cm), while AA at 40°C for 8 days resulted in the lowest germination (62%) and TSL (6.4 cm), highlighting the adverse effects of prolonged thermal stress. Interestingly, seeds aged at 42°C for 8 days demonstrated a recovery in germination (80%) and improved shoot (11.77 cm) and root lengths (13.38 cm), suggesting potential thermal resilience. Statistical analysis confirmed significant treatment effects, providing insights into the physiological and biochemical responses of lentil seeds under accelerated aging conditions. This study underscores the importance of understanding seed vigor and resilience mechanisms for enhancing seed quality and crop productivity under adverse conditions.