Pear is a fruit crop of worldwide importance and cold storage is an integral part of the production and distribution of pears. An uncharacterized fungal disease has been observed on ‘Huangguan’ pear fruit during cold storage in Hebei Province. The fungus was consistently isolated from diseased fruit by routine tissue separation method, and shown to be the causal agent according to Koch postulates. Based on its morphology, molecular characteristics, pathogenicity and ITS sequence, the fungus was identified as Rhizoctonia solani. This study recorded postharvest fruit rot caused by Rhizoctonia solani on pear fruit in China.

中文翻译：

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梨贮藏期间立枯丝核菌的分离鉴定及人工接种

梨是世界范围内重要的水果作物，冷藏是梨生产和销售不可或缺的一部分。河北省'黄冠'梨果实在冷藏期间发生了一种不典型的真菌病害。通过常规组织分离方法始终从病果中分离出这种真菌，根据科赫假设，该真菌被证明是病原体。根据其形态学、分子特征、致病性和ITS序列，该真菌被鉴定为立枯丝核菌( Rhizoctonia solani)。本研究记录了由立枯丝核菌引起的我国梨果实采后腐烂病害。