首页|补骨脂种子提取物对茶饼病菌的抑菌活性

补骨脂种子提取物对茶饼病菌的抑菌活性

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探讨补骨脂(Psoralea corylifolia L。)种子提取物对茶饼病菌(Exobasidium vexans Massee)的抑菌活性及田间防治效果。采用孢子萌发抑制率法和菌丝生长速率法测定补骨脂种子提取物的抑菌活性，按照农药田间药效试验准则在5省5地进行茶饼病田间试验。室内抑菌活性试验结果表明，补骨脂种子提取物对茶饼病菌孢子萌发和菌丝生长具有明显的抑制作用，抑制率随着药剂浓度的增加而增加，其EC50分别为12。925 mg/L和6。074 mg/L。田间试验结果表明，当补骨脂种子提取物微乳剂有效成分用量为2。00～2。67 mg/kg时，其对茶饼病的防治效果为68。08%～83。78%，其防治效果相当或优于对照药剂3%多抗霉素可湿性粉剂。
The antifungal activity of Psoralea corylifolia seeds extract against Exobasidium vexans
The antifungal activity and the field control effects of Psoralea corylifolia seeds extract against Exobasidium vexans were ex-plored.The spore germination inhibition rate method and mycelium growth rate method were used to determine the antifungal activity of Psoralea corylifolia seeds extract,and the field trials of Exobasidium vexans were carried out in five provinces and five places ac-cording to the pesticide field efficacy trials guideline.The indoor antifungal activity test showed that Psoralea corylifolia seeds extract had an obvious inhibitory effect on the spore germination and mycelium growth of Exobasidium vexans,and the inhibition rate in-creased with the increase of drug concentration,with the EC50 of 12.925 mg/L and 6.074 mg/L,respectively.The results of field trials showed that when the dosage of active ingredients of Psoralea corylifolia seeds extract microemulsion was 2.00～2.67 mg/kg,the field control effects of Exobasidium vexans was 68.08%～83.78%,which was equivalent to or better than that of the control agent 3%polyox-in wettable powder.

biological pesticidetea cake disease(Exobasidium vexans Massee)antifungal activityfield control effectsPsoralea corylifolia seeds extract

孙礼雪、关丽杰、马晓彤、高洁、张洪雨、商今雨

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沈阳化工大学制药与生物工程学院,沈阳 110142

朝阳市阎王鼻子水库工程建设管理局,辽宁 朝阳 122099

生物农药 茶饼病菌(Exobasidium vexans Massee) 抑菌活性 田间防治效果 补骨脂(Psoralea corylifolia L.)种子提取物

国家重点研发计划辽宁省教育厅项目

SQ2020YFF0411744LJKMZ20220787

2024

10.14088/j.cnki.issn0439-8114.2024.05.009

湖北农业科学
湖北省农业科学院　华中农业大学　长江大学　黄冈师范学院

湖北农业科学

CSTPCD
影响因子：0.442
ISSN：0439-8114
年,卷(期)：2024.63(5)
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