In order to analyze the influence of waterlogging on the morphological characteristics of peanut root system,a tolerant variety Xianghua 2008 and a sensitive variety Zhonghua 4 were used as materials,and pot experiment was carried out with the self-made root rack system.After 0,3,6,9,and 12 days of waterlogging stresses in the seedling stage,the root morphological characteristics were studied based on the fresh(dry)weight,microscopic and ultrastructure of the root system.The results showed that the root system of Zhonghua 4 was greatly damaged by waterlogging stress.As the days of flooding pro...