This paper studied the exogenous ethylene treatment on changes of membrane permeability and membrane lipid peroxidation of rubber seedlings. This study puts forward theories for using ethrel to choice rootstock. Based on the test of membrane permeability and membrane lipid peroxidation for six kinds of rubber seedling which are differently sensitive to exogenous ethylene .The result show that membrane permeability of material one exhibited significantly higher than material two and membrane lipid peroxidati...