Effects of p3s on Growth and Physiological Responses to Stresses in Rubber Tree Seedlings
The effects of p3s on the growth and activities of resistance-related enzymes were studied.The results indicated that: The treatment of 6.0 mg/L of p3s significantly optimized the height,stem diameter,leaf area,distance between leaf-umbrella;The treatment of 4.5 mg/L of p3s significantly increased the activity of POD;The treatment of 6.0 mg/L of p3s significantly increased the activities of PPO and PAL;Compared with the control,the activities of POD,PPO;PAL maintained higher level over a period of time;In contrast to the control,the treatment of 6.0 mg/L of p3s significantly increased the ability of rubber seedlings resistance to anthracnose.It was concluded that plant growth regulator p3s promoted the growth of rubber seedlings and effectively improved the resistance and disease resistance of rubber tree seedlings and kept its effectiveness over a long time after application.