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Efficacy of Rheum officinale liquid formulation on cucumber powdery mildew

文献类型： 外文期刊

作者： Yang, Xiaojun 1 ; Ma, Xingxia 3 ; Yang, Lijun 2 ; Yu, Dazhao 2 ; Qian, Yixin 4 ; Ni, Hanwen 1 ;

作者机构： 1.China Agr Univ, Coll Agron & Biotechnol, Beijing 10094, Peoples R China

2.Hubei Acad Agr Sci, Inst Plant Protect & Soil Sci, Wuhan 430064, Peoples R China

3.Chinese Acad Forestry, Res Inst Wood Ind, Beijing 100091, Peoples R China

4.Beijing Kingbo Biotechnol Co Ltd, Beijing 100020, Peoples R China

关键词： Rheum officinale liquid;formulation;Physcion;Podosphaera xanthii;Efficacy

期刊名称：CROP PROTECTION （ 影响因子：2.571； 五年影响因子：3.11 ）

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收录情况： SCI

摘要： Rheum officinale liquid formulation, the ethanol extract from roots of R. officinale Baill., formulated as physcion 5gl^-^1 aqueous solution (AS), has been commercialized in China for controlling cucumber powdery mildew (Podosphaera xanthii (Castagne) U. Braun '' Shishkoff). The efficacy of the product was evaluated in pot tests under controlled conditions and in open and protected fields in China over 2 years. In most trials, the efficacy reached above 80% at the rates of 10-50mga.il^-^1 water after three applications and at the rates of 20-50mga.il^-^1 water after two applications. The cucumber fruit yield in the product treatment was as many or more as triadimefon treatment, and over 53.1% compared to the untreated control. These results showed that Chinese rhubarb extract could be an effective alternative plant protecting agent in the integrated and biological management of cucumber powdery mildew.

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[1]Physcion, a natural anthraquinone derivative, enhances the gene expression of leaf-specific thionin of barley against Blumeria graminis. Ma, Xingxia,Ni, Hanwen,Ma, Xingxia,Yang, Xiaojun,Yang, Xiaojun,Zeng, Fansong,Yang, Lijun,Yu, Dazhao.

[2]Effects of physcion, a natural anthraquinone derivative, on the infection process of Blumeria graminis on wheat. Yang, Xiaojun,Yang, Lijun,Yu, Dazhao,Ni, Hanwen. 2008

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