Effects of ethephon on botanical characters and physiological indexes of sweet pepper seedlings

In order to control the excessive growth of sweet pepper seedlings,Retian No.6 sweet pepper was treated with different concentrations of ethephon for analyzing the impact on botanical characters and physiological indexes of sweet pepper seedlings.The results showed that 400~800 mg/L 40% ethephon could significantly reduce the plant height,increase stem diameter,improve root to shoot ratio,and enhance the activity of SOD and POD.800 mg/L 40% ethephon was the optimal concentration which could significantly improve the quality of sweet pepper seedlings.