Abstract：The commonly grown eggplant（Solanum melongena L．）cultivar‘Xi’anlvqie’was used as scion．It was grafted with eggplant rootstock（Solanum torvum）．Pesticide residues in fruit and growth index and antioxidant enzyme activities of grafted eggplants and self-rooted eggplants under the conditions of 75% chlorothalonil WP 800 times liquid application were assayed．The results showed that pesticide residues in fruit to grafted eggplants declined 32.07%-100.00% than the self-rooted control．The plant height，stem diameter，fresh weight of aboveground，fresh weight of root，root activity，proline content（Pro），peroxidase（POD）activity，catalase（CAT）activity and phenylalanine ammonia-lyase（PAL）activity of grafted eggplants were all higher than the self-rooted control by 3.82%-24.70%，3.05%-22.47%，11.97%-25.83%，30.95%-57.45%，46.43%- 79.41%，14.93%-40.08%，24.36%- 42.99%，17.09%-39.15%，12.60%- 45.44%，respectively．The relative conductivity and malondialdehyde（MDA）content were lower comparing with the control by 24.31%-52.22% and 22.65%-39.41%，respectively．Therefore，grafting has physiologically increased eggplant in vivo relevant resistance，thus reduced the pesticide residues in eggplant fruit．
