Impact of Ozone and α-Tocopherol on Plant Height and Leaf Area of Withania somnifera

The impact of ozone and α-tocopherol on Withania somnifera has been assessed with reference to plant height and leaf area. The control plants of Withania somnifera attained a height of 21.43 cm in 30 days. Their fully expended leaves attained 37.74 cm² area (per leaf). Ozone exposure resulted in a sharp decline in plant height and leaf area. The percentage decline was 70.14 % and 52.60 % respectively. The simultaneous application of α-tocopherol with ozone exposure nullified the ozone impact. In 200 ppm α-tocopherol, the plant height mounts to 22.47 cm which is even more than that of control. Similarly, the negative impact of ozone on leaf area was almost neutralized by 200 ppm α-tocopherol.