Journal of Medicinal Materials, 2023, Vol. 28, No. 2 (pp. 122 - 128)
EFFECT OF SOME MEDICINAL PLANT EXTRACTS AGAINST SCLEROTIUM ROLFSII CAUSING BASAL ROT OF CHINESE FOXGLOVE (REHMANNIA GLUTINOSA)
Chu Thi My1, Do Thi Thuy Linh3, Do Quang Thai3, Hoang Thanh Duong3, Tran Huu Khanh Tan1, Tran Dai Hai1, Duong Van Sang4, Cu Thi Hang1, Tran Van Loc2,
Nguyen Thi Binh1, Nguyen Thu Huyen1, Phan Thuy Hien1, Dang Thi Ha1,*
1Research Centre of Medicinal Plants, National Institute of Medicinal Materials;
2National Research Center for Medicinal Plant Germplasm and Breeding - National Institute of Medicinal Materials, Hanoi, Vietnam;
3Department of Extraction Technology, National Institute of Medicinal Materials, Hanoi, Vietnam;
4Vietnam National University of Agriculture
*Corresponding author: danghatthn@gmail.com
(Received November 26th, 2022)
Summary
Effect of some Medicinal Plant Extracts Against Sclerotium rolfsii Causing Basal Rot of Chinese Foxglove (Rehmannia glutinosa)
Four medicinal herbs (Artemisia annua, Croton tonkinensis, Cinnamomum camphora, and Datura metel) were extracted with 96% ethanol in a rate 1:10 (w/v). These dry extracts can be used at various concentrations (from 0.01% to 3.0%) in vitro in the PDA medium to inhibit the growth of Sclerotium rolfsii Sacc., which causes the basal rot of Chinese Foxglove (Rehmannia glutinosa Libosh.) in Bac Giang province. The results demonstrated that the extracts of C.camphora and A. annua at a concentration of 1.5% inhibited the development of S. rolfsii. Similarly, the extract from the D. metal at a concentration of 3% on the PDA medium, totally inhibited the S. rolfsii after 15 days of inoculation. Finally, a 3% concentration of the C. tonkinensis extract significantly inhibited the development of S. rolfsii in the PDA medium with the percentage of inhibition reaching over 71%; however 10 days after inoculation, the fungus stopped growing.
Keywords: Extract, Artemisia annua, Croton tonkinensis, Cinnamomum camphora, Datura metel, Inhibition
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