Effect of Chinese Herb Extracts on Spore Germination of Qidium murrayae and Nature of Inhibitory Substance from Chinese Rhubarb

in Sciences Citation Index(SCI), 科學引文索引資料庫(SCI)
標題Effect of Chinese Herb Extracts on Spore Germination of Qidium murrayae and Nature of Inhibitory Substance from Chinese Rhubarb
出版類型SCI(Sciences Citation Index)
出版年度2006
AuthorsHUA TSEN, 何婉清
期刊Plant Disease
出版日期2006 / 7
其他編號0000
中文摘要

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 14000, but was exchangeable by anion but not cation exchange resins, indicating that the inhibitor has a molecular weight lager than 14000 and negative charge on its molecule.

校址:912 屏東縣內埔鄉學府路1號 總機:886-8-7703202 傳真:886-8-7740165 系統開發統維護單位:國立屏東科技大學 電算中心 版權所有