Waterlogging is the frequent occurrence of peanut seed germination in southern China.The direct effect is the lack of oxygen and effecting the respiration of plants.In this experiment,three peanut varieties with significant difference in waterlogging tolerance were treated under waterlogging stress at different times.The activities of succinate dehydrogenase(SDH),alcohol dehydrogenase(ADH)and lactate dehydrogenase(LDH)were determined..The results showed that SDH activity was higher,LDH and ADH activity was lower in the germination period of the waterlogging resistant varieties.And the SDH acti...