Pathogen identification of stem rot on Paris polyphylla Smith var. chinensis （Franch.） Hara in Yichang

doi:10.14088/j.cnki.issn0439-8114.2025.02.015

Abstract

Abstract: In order to effectively control the rot on the stem of Paris polyphylla Smith var. chinensis （Franch.） Hara in Yichang City, Hubei Province, the pathogen of the disease was isolated and identified. Using conventional tissue isolation methods, a white filamentous fungal strain causing stem rot on Paris polyphylla Smith var. chinensis （Franch.） Hara was isolated and named CLY-2. Through microscopic observation, the large conidia of CLY-2 strain were columnar with septa, and the size was （22.0~33.0） μm × （3.1~4.4） μm. The small conidia were kidney shaped or oval-shaped, single-celled, solitary or tandem, with a size of （2.5~8.2） μm × （1.2~3.5） μm. Based on the rDNA-ITS sequence phylogenetic analysis, CLY-2 strain was ultimately identified as Fusarium foetens, a fungus belonging to the genus Fusarium.

Key words: Paris polyphylla Smith var. chinensis（Franch.） Hara, stem rot, Fusarium genus, pathogen identification, Yichang City, Hubei Province

CLC Number:

S435.672

XU Lan-ting, HUANG Jing-lin, WANG Jing-xu, HUANG Zhi-jun, YANG Zheng-rong, JIA Qie, WANG Peng-cheng. Pathogen identification of stem rot on Paris polyphylla Smith var. chinensis （Franch.） Hara in Yichang[J]. HUBEI AGRICULTURAL SCIENCES, 2025, 64(2): 94-98.

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