郑睿, 聂亚锋, 于俊杰, 黄磊, 俞咪娜, 尹小乐, 黄星, 王亚会, 郑梦婷, 刘永锋. 江苏省水稻恶苗病菌对咪鲜胺和氰烯菌酯的敏感性[J]. 农药学学报, 2014, 16(6): 693-698. DOI: 10.3969/j.issn.1008-7303.2014.06.10
    引用本文: 郑睿, 聂亚锋, 于俊杰, 黄磊, 俞咪娜, 尹小乐, 黄星, 王亚会, 郑梦婷, 刘永锋. 江苏省水稻恶苗病菌对咪鲜胺和氰烯菌酯的敏感性[J]. 农药学学报, 2014, 16(6): 693-698. DOI: 10.3969/j.issn.1008-7303.2014.06.10
    shu
    ZHENG Rui, NIE Yafeng, YU Junjie, HUANG Lei, YU Mina, YIN Xiaole, HUANG Xing, WANG Yahui, ZHENG Mengting, LIU Yongfeng. Sensitivity of Fusarium fujikuroi to prochloraz and JS399-19 in Jiangsu Province[J]. Chinese Journal of Pesticide Science, 2014, 16(6): 693-698. DOI: 10.3969/j.issn.1008-7303.2014.06.10
    Citation: ZHENG Rui, NIE Yafeng, YU Junjie, HUANG Lei, YU Mina, YIN Xiaole, HUANG Xing, WANG Yahui, ZHENG Mengting, LIU Yongfeng. Sensitivity of Fusarium fujikuroi to prochloraz and JS399-19 in Jiangsu Province[J]. Chinese Journal of Pesticide Science, 2014, 16(6): 693-698. DOI: 10.3969/j.issn.1008-7303.2014.06.10
    shu

    江苏省水稻恶苗病菌对咪鲜胺和氰烯菌酯的敏感性

    Sensitivity of Fusarium fujikuroi to prochloraz and JS399-19 in Jiangsu Province

      摘要
    • 摘要: 对采自江苏省姜堰、靖江和常州3个地区的水稻恶苗病样品进行了病原菌的分离和鉴定,利用菌丝生长速率法测定了病原菌对咪鲜胺和氰烯菌酯的敏感性。结果表明:分离得到77株水稻恶苗病菌Fusarium fujikuroi;咪鲜胺对水稻恶苗病菌的EC50值在0.020～1.333 μg/mL之间,分离到的菌株对咪鲜胺均表现为中抗和高抗,其中中抗菌株18株,占23.38%,高抗菌株59株,占76.62%,说明咪鲜胺高抗菌株已经成为江苏省的恶苗病菌优势群体。氰烯菌酯(JS399-19)对水稻恶苗病菌的EC50值在0.012～2.040 μg/mL之间,菌株的敏感性频率近似正态分布,EC50均值为(0.684±0.265) μg/mL,建议将此值作为江苏省水稻恶苗病菌对氰烯菌酯的敏感性基线。

       

      Abstract: Samples of rice bakanae disease were collected from Jiangyan, Jingjiang, Changzhou in Jiangsu Province. Seventy seven isolates of Fusarium fujikuroi were identified, and their sensitivity to prochloraz and JS399-19 were investigated using mycelium growth inhibition method. The results exhibited that the EC50 values of prochloraz to F. fujikuroi isolates were from 0.020 to 1.333 μg/mL. Among the 77 F. fujikuroi isolates, 18 isolates exhibited medium level resistance to prochloraz, with a frequency of 23.38%;while 59 isolates showed high level resistance, with a frequency of 76.62%. The resistant population of F. fujikuroi to prochloraz was dominant in Jiangsu Province. The EC50 values of JS399-19 to F. fujikuroi isolates were from 0.0124 to 2.040 μg/mL, and the sensitivity frequency of F. fujikuro isolates to JS399-19 exhibited a Gaussian distribution, with mean EC50 value (0.684±0.265) μg/mL, which could be considered as sensitivity baseline of F. fujikuro to JS399-19 in Jiangsu Province.

       

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