Chinese Journal OF Rice Science

Chinese Journal of Rice Science

• 研究简报 • Previous Articles    

A Study on the Exudate of Antibiotic Bacterium 91(JK-91-b) against Thanatephorus cucumeris Caused Rice Sheath Blight

Chen Zhiyi; Gao xiantin; Chen Yulin; Yin Shangzhi   

  • Received:1900-01-01 Revised:1900-01-01 Online:1994-10-10 Published:1994-10-10

拮抗细菌的分泌物拮抗素JK-91-b对水稻纹枯病菌抗生活性试验

陈志谊1； 高先亭2；陈毓苓1；殷尚智1   

  1. 1 江苏省农业科学院，南京210014；2 江苏农学院，扬州225001

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Abstract: As Thanatephorus cucumeris and JK-91-b (the exudate of antibiotic bacterium 91) solution were dual spotted on PDA plate, antagonistic band with 10.7 mm in width appeared. the JK-91-b inhibited the growth of T. cucumeris, and its hyphal development became irregular and sclerotial formation was delayed. The pathogenicity of mycelia and sclerotia were reduced when treated by JK-91-b. Sheath blight severity was reduced significantly when JK-91-b was sprayed on rice plants ahead and then untreated mycelia or sclerotia were inoculated. The control effect of JK-91-b was 45.1%.

Key words: Antibiotic, Antibiotic activity, Thanatephorus cucumeris

关键词: 拮抗素, 抗生活性, 水稻, 纹枯病, 拮抗作用, 生物防治