Identification and biological characteristics of the pathogen causing anthracnose on goldthread in Hubei province

doi:10.14088/j.cnki.issn0439-8114.2020.24.026

Abstract

Abstract: To identify anthracnose on goldthread in Hubei province, study its biological characteristics, and screen effective fungicides, there were twelve isolates isolated by tissue isolation method from infected leaves collected from Banqiao, Enshi, Hubei province. Among them, EsH2 and EsH6 succeed to infect leaves of goldthread in vitro and produce typical lesions. While morphology and ITS phylogenetic analysis indicated the two isolates belonging to Colletotrichum boninense species complex. Evaluation of culture under variants illumination conditions showing that they grew significantly slower under absence of light. And they grew more rapid on mung bean medium and PDA than obtained from others, respectively. Results of fungicide toxicity assay exhibited thiophanate-methyl, pyraclostrobin and difenoconazole were more effective fungicides than others with relatively low EC₅₀ and high correlation coefficient.

Key words: Coptis chinensis Franch, anthracnose, phylogenetic analysis, biological characteristics, fungicides

CLC Number:

S432.1

WANG Zuo-qian, PAN Zhu-qing, ZHANG Shu, YOU Jing-mao, WANG You-ping, YANG Xiao-lin. Identification and biological characteristics of the pathogen causing anthracnose on goldthread in Hubei province[J]. HUBEI AGRICULTURAL SCIENCES, 2020, 59(24): 117-121.

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