Sloanea hemsleyana is an evergreen native tree in southern China.In order to study the effects of applying K-IBA to the cuttings on the change of nutrient content and activity of the protective enzymes in the cuttings during the cutting propagation,the contents of soluble sugar,total nitrogen,soluble protein,MDA,and the activity of SOD and POD were measured for 7 times every 10 days.The results of 60 days consecutive analysis show that K-IBA could significantly improve the content of nutrients and stimulate the activity of protective ...