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Identification and Laboratory Fungicides Screening of the Pathogenic Fungus of Stem Spot of Pitaya (Hylocereus spp.) Stems

文献类型: 外文期刊

作者: Luo, Hui 1 ; Guo, Kun 1 ; Shang, Xueying 1 ; Peng, Lei 1 ; Peng, Zhijun 1 ; Jin, Jilin 1 ; Wang, Bin 1 ; Zhang, Xingwu 1 ;

作者机构: 1.Guizhou Acad Agr Sci, Inst Fruit Sci, Guiyang 550006, Peoples R China

期刊名称:JOURNAL OF CHEMISTRY ( 影响因子:3.241; 五年影响因子:3.372 )

ISSN: 2090-9063

年卷期: 2022 年 2022 卷

页码:

收录情况: SCI

摘要: In this study, the pathogenic fungus of stem spot disease of pitaya (Hylocereus spp.) stems was identified by isolation and purification, pathogenicity test, morphological characteristics, and analysis of rDNA-ITS sequences. The results turned out that the rDNA-ITS sequences of the H1 strain showed 100% of identity with Botryosphaeria dothidea, indicating that the pathogenic fungus of stem spot disease of pitaya stems was Botryosphaeria dothidea. Meanwhile, the H1 strain was then used as a reference strain to screen some commercial fungicides. The bioassay test results indicated that prochloraz had an obvious inhibitory effect on Botryosphaeria dothidea with the EC50 value of 0.0798 mu g/mL. Our study could provide a theoretical basis for the effective control method of stem spot disease of pitaya.

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