Cell-Free Supernatant of Bacillus Strains can Improve Seed Vigor Index of Corn (Zea mays L.) Under Salinity Stress

Currently, salinity is the second biggest challenge in world after drought and affects all stages of plant growth. The use environmentally friendly methods such as microorganisms their derivatives can reduce destructive effects stress. A growth chamber experiment was conducted to determine cell-free supernatant (CFS) from Bacillus strains on germination corn under Corn seeds were subjected three levels (0, 100 150 mM NaCl), (U35, U47, U48, U49, U50) at two dilution (1:50 1:250). Germination percentage rate decreased with increasing toward NaCl together leading suppressed variables for seed seedlings including fresh dry weight radicle (47.71 52.63%, respectively), shoot (49.52 49.25%, lengths (39.90 66.07%, respectively). Seed vigor index also by 63.04% NaCl. Contrary salinity, CFSs increased traits reduced negative especially severe salinity. Ratios 1:50 1: 250 gave best performance U35 U50, respectively. In general, highest obtained application CFS U50. Most correlated significantly positive; however, mean time negatively corn. results showed that use, may well-helped changing ratios phytohormones, ROS, activity antioxidant enzymes osmotic proteins, hence improve which eventually increases ability seedling establishment saline conditions.