CHINESE JOURNAL OF OIL CROP SCIENCES ›› 2020, Vol. 42 ›› Issue (1): 134-.doi: 10.19802/j.issn.1007-9084.

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 Identification of pathogen causing castor seed bud rot


  1. Agricultural College of Guangdong Ocean University, Zhanjiang 524088, China
  • Online:2020-02-28 Published:2020-03-09

Abstract:  To clarify the cause of castor bean bud rot, pathogenic strains were isolated by tissue isolation and tested for pathogenicity. Classification status of the pathogens were determined by ITS-PCR combined with morpho⁃ logical identification. Results showed that RFR1-4 isolated from the disease samples, was confirmed to be the pathogen according to Koch's rule. It was identified as Fusarium solani by morphological characteristics. By ITS analysis, EF1-α and β-tubulin sequences revealed a 100% identity with F. solani species complex by polyphasic identification of FUSARIUM-ID database. Therefor, the pathogenic strain (RFR1-4) was identified to be a member of F. solani species complex which caused castor bean bud rot. Key words: castor;bean bud rot;Fusarium solani species complex 蓖麻(Ricinus communis L.

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