A novel bioassay method: Determining bioactivity of compounds against rice blast (Magnaporthe grisea) with barley plants
文献类型: 外文期刊
作者: Yang, X. J. 1 ; Ma, X. X. 2 ; Yang, L. J. 2 ; Yu, D. Z. 2 ; Ni, H. 2 ;
作者机构: 1.China Agr Univ, Agron & Biotechnol Coll, Beijing 10094, Peoples R China
2.China Agr Univ, Agron & Biotechnol Coll, Beijing 10094, Peoples R China; Hubei Acad Agr Sci, Inst Plant Protect & Soil Sci, Wuhan 430064, Peoples R China; Chinese Acad Forestry, Res Inst Wood Ind, Beijing 100091, Peoples R China
关键词: barley;bioassay method;fungicide bioactivity;Magnaporthe grisea;rice;Bietest;Fungizidaktivitat;Gerste;Magnaporthe grisea;Reis
期刊名称:JOURNAL OF PLANT DISEASES AND PROTECTION ( 影响因子:1.928; 五年影响因子:1.652 )
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收录情况: SCI
摘要: This paper developed an in vivo bioassay method of determining bioactivity of compounds against Magnaporthe grisea (Hebert) Barr. with barley (Hordeum vulgare L.) plants, instead of rice (Oryza sativa L.) plants. To confirm whether this method could be used to screen active compounds against this fungus or not, experiments were conducted using the five fungicides tricyclazole, kasugamycin, thiophanate-methyl, iprobenfos and salicylic acid with different action modes. The results showed there were close correlation in disease severity and no significant difference in EC_(50) values between rice and barley, and the coefficients of variations of EC_(50) values were similar between rice and barley for the four tested fungicides in both detached-leaf-segment and pot-seedling tests. The advantage in bioactivity determination with barley was time-saving. Plant materials could be used at the 1-leaf stage for barley while at the 5-leaf stage for rice. So it shortened about 14 days for the preparation of plant materials for tests.
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