Magnetic Field Can Improve Germination Potential and Early Seedling Vigor of Cabbage Seeds

The effect of magnetic field strengths (5, 10 and 15 mT) for 15, 25 and 35 min, on seed germination, vigor and seedling growth of two cabbage cultivars (Golden Acre and Green Ball) was evaluated through germination test. Higher germination percentage and vigor index was recorded in Golden Acre as compared to Green Ball. Seeds of both cultivars exposed to 5 mT and/or 10 mT exhibited improved uniformity in germination and membrane integrity due to reduction in time taken to 50% germination, mean germination time and electrical conductivity of seed leachates in contrast to control. Cabbage cultivar Golden Acre and Green Ball showed higher vigor and seedling fresh weight in response to magnetic field of 5 and 10 mT, respectively for both 15 and 25 minutes durations. Moreover, efficiency of each magnetic dose declined with increase in exposure time, particularly when seed were exposed to 15 mT. Results revealed significance of magnetic field treatment to improve seed germination (both percentage and uniformity), vigor and seedling growth of cabbage.