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芹菜、西洋芹苗期染黄萎病后,表现生长缓慢。当气温达到20℃以上时,叶色由绿变为黄绿色,致幼苗萎蔫或枯死。成株染病在高温季节叶片无光泽,叶色变暗淡,严重时叶片失绿或脉间叶肉出现黄绿相间斑驳,剖开病茎维管束变褐或根及根颈部、叶柄变为红色,根系腐烂致整株枯死。
Celery, cress seedling stage Verticillium wilt, the performance of slow growth. When the temperature reached above 20 ℃, the leaf color from green to yellow-green, causing seedlings wilting or withering. Adult plant disease in the hot season leaves matte, leaf color becomes dim, severe green leaves or veins green to yellow mottled mottling, cut open the stem vascular bundle brown or root and neck, the petiole turns red, Root rot caused the entire plant dead.