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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