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1 症状 初期栗种仁上产生黑灰色、黑色或墨绿色腐烂病斑 ,并逐渐干腐 ,出现空洞。空洞内有灰黑色菌丝丛 ,种仁易粉碎。种皮表面也覆盖有黑灰色菌丝层 ,种皮下形成粉状子座。病症主要分为 3种类型 :1)黑斑型 ,种皮处基本正常 ,种仁表面产生形状不规整的黑褐色至灰黑色条状空洞
1 Symptoms Chestnut seed kernels produce dark gray, black or dark green rot lesions, and gradually dry rot, appear hollow. Gray black mycelium plexus, seed easily crushed. Seed coat surface is also covered with dark gray mycelium layer, the formation of seed subcutaneous seat. Illness is mainly divided into three types: 1) black spot type, the seed coat at the normal, seed surface irregularly shaped dark brown to gray black stripes