１９９３～１９９４年对单接瓜果腐霉菌Ｐｙｔｈｉｕｍａｐｈａｎｉｄｅｒｍａｔｕｍ或禾谷镰刀菌Ｆｕｓａｒｉｕｍｇｒａｎｍｉｎｅａｒｕｍ的玉米苗期茎腐病抗感病株冰冻切片镜检结果，品种的抗性与筛管中的胼胝质沉积物形成的时间早晚及萤光强弱有关。形成的时间越晚，萤光越强的品种越抗病；植株的主根和茎基皮层细胞壁及中柱维管束的细胞壁厚，大导管数量多、筛管细胞粗短者抗病，反之壁厚、小导管数量多、筛管细胞细长者感病。 From 1993 to 1994, the results of microscopic examination of the freezing streaks of the susceptible strains of stalk rot of corn with Pythium maphanidermatum or Fusarium granminearum, the resistance of cultivars to callose sediment in sieve tube Time sooner or later and fluorescence intensity related. The later the formation time, the stronger the varieties of the more resistant to disease; the plant’s main root and stem base cortical cell wall and the columnar vascular bundle cell wall thickness, the number of large ducts, short screen cell resistance disease, whereas wall thickness , A small number of small catheters, slender cells screened.