請用此 Handle URI 來引用此文件: http://hdl.handle.net/11455/46158
標題: Effect of Chinese herb extracts on spore germination of Oidium murrayae and nature of inhibitory substance from Chinese rhubarb
作者: Chu, Y.L.
柯文雄
Ho, W.C.
Ko, W.H.
關鍵字: powdery mildew
fungicidal properties
sodium-bicarbonate
vegetable-oils
spray-fluids
rheum-emodi
identification
soil
期刊/報告no:: Plant Disease, Volume 90, Issue 7, Page(s) 858-861.
摘要: More than 21% of the Chinese herbs tested contained substances in their aqueous extracts inhibitory to conidial germination of the powdery mildew fungus Oidium murrayae. Extracts from Chinese rhubarb and Japanese knotweed were very effective in controlling powdery mildew on cucumber, pumpkin, and eggplant. The inhibitory substance in Chinese rhubarb was soluble in polar solvents and less soluble in nonpolar solvents. The inhibitor in the aqueous extract was not dialyzable in the membrane tubing with molecular weight cut-off of 14,000, but was exchangeable by anion but not cation exchange resins, indicating that the inhibitor has a molecular weight larger than 14,000 and negative charge on its molecule.
URI: http://hdl.handle.net/11455/46158
ISSN: 0191-2917
文章連結: http://dx.doi.org/10.1094/pd-90-0858
顯示於類別:植物病理學系

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