文献类型： 外文期刊

作者： Zhang, Yiming ¹ ; Wu, Tingguan ² ; He, Yonghong ³ ;

作者机构： 1.Huzhou Vocat & Tech Coll, Huzhou 313000, Zhejiang, Peoples R China

2.Jiangxi Acad Agr Sci, Hort Res Inst, Nanchang 330200, Jiangxi, Peoples R China

3.Yunnan Agr Univ, Coll Plant Protect, Kunming 650201, Yunnan, Peoples R China

关键词： Amomum tsao-ko; leaf blast; mycelial growth; Pyricularia variabilis; plant disease

期刊名称：OPEN LIFE SCIENCES （ 影响因子：1.311； 五年影响因子：1.293 ）

ISSN： 2391-5412

年卷期： 2021 年 16 卷 1 期

页码：

收录情况： SCI

摘要： In recent years, the pathogen that causes leaf blast on Amomum tsao-ko repeatedly infected the plants in a large area of Luchun County, Honghe Prefecture, Yunnan Province, China. The disease is caused by the pathogen Pyricularia variabilis. The effects of light, tem-perature, pH, carbon, and nitrogen sources on the growth of the pathogen were determined, and its sensitivity to six fungicides was determined using the mycelial growth rate method. The optimal conditions for mycelial growth were as follows: temperature: 20-25 degrees C; carbon source: maltose, nitrogen source beef extract, media corn flour, and potato dextrose agar. The mycelia could grow under four types of light conditions: 24 h light, 24 h dark, 12 h light/12 h dark, and 16 h light/8 h dark. In addition, Propiconazole was the most effective inhibitor, with an EC50 value of 0.030 mu g/mL, and prochloraz was the second most effective, with an EC50 value of 0.076 mu g/mL. It is suggested that the two fungicides should be alternated when used in production. Carbendazim and chlorothalonil were ineffective in inhibiting the fungus, with EC50 values of 6.137 and 3.765 mu g/mL, respectively.