Effects of Mycorrhiza Preinoculation on the Active Oxygen Metabolism of Sugarcane Leaves Under Water Stress Conditions

Effects of G.Mosseae and C.Lilacina on drought-resistance of sugarceane were carried out in greenhouse.Sugarcane seedlings were preinoculated with mycorrhiza fungus and then transplanted to pots.It was indicated that inoculations with mycorrhiza fungus led to the increase of drought-resistance of the plant.The accumulation of active oxygen and the peroxidation,which resulted in the raising of plasma plant.The accumulation of active oxygen and the peroxidation,which resulted in the raising of plasma permeability and the activities of Mg²⁺-ATPase and CA²⁺-ATPase,were lessened with the decrease of O^-₂ production rate and the enhancement of active oxygen scavenger capacity such as the increase of SOD and CAT activity and GSH content. The results also showed that to enhance the drought-resistance of sugarcane affected by water stresses,combinative inoculation with G. mosseas, C.lilacinaand Azotobacter sp. was better than their single or double inoculation,respectively.