摘要： 以黄瓜炭疽病菌(Colletotrichum lagenarium)和白菜黑斑病菌(Alternaria brassicae)为供试真菌，采用生长速率法对126种中草药的80%乙醇提取物进行了离体生物活性测定。结果表明：在提取物供试质量浓度为0.01 g/mL条件下(初筛)，龙葵、猫爪草、枇杷叶等27种中草药提取物对至少一种病原真菌的菌丝生长抑制率超过50%，有6种提取物对2种病原菌抑制率均达50%以上。将初筛抑制率达50%以上的提取物浓度稀释为0.005 g/mL，进一步对相应病菌进行测试，发现有11种中草药提取物对黄瓜炭疽病菌的抑制率达60%以上，有3种提取物对白菜黑斑病菌的抑制率在40%以上。
关键词:
中草药提取物,
抑菌作用,
黄瓜炭疽病菌,
白菜黑斑病菌
Abstract: The antifungal activities of 126 species of medical plant extracts (MPE) were tested against mycelia growth of Colletotrichum lagenarium and Alternaria brassicae. The result showed that at the concentration 0.01 g/mL, the antifungal rate of 27MPE (for example, Soianum nigrum, Ranunculus ternatus and Eriobotrya iaponica) was more than 50% against at least one tested fungi. The antifungal rate of 6 MPE was more than 50% to both of the tested fungi. At the secondary screening, the tested MPE were diluted to 0.005 g/mL. The inhibitory rate of 11 species to C. lagenarium was more than 60%, the inhibitory rate of 3 species to A. brassicae was up to 40%.
Key words:
Medical Plant Extracts (MPE),
Inhibition,
Colletotrichum lagenarium,
Alternaria brassicae
中图分类号:
田菲菲, 蒋继志, 沈凤英, 张凤巧, 孙明清, 王树桐. 126种中草药提取物对两种植物病原菌的抑菌活性[J]. 华北农学报, 2006, 21(S1): 131-134. doi: 10.3321/j.issn:1000-7091.2006.z1.031.
TIAN Fei-fei, JIANG Ji-zhi, SHEN Feng-ying, ZHANG Feng-qiao, SUN Ming-qing, WANG Shu-tong. Antifungal Activity of 126 Medical Plant Extracts Against Two Plant Fungal Pathogens[J]. ACTA AGRICULTURAE BOREALI-SINICA, 2006, 21(S1): 131-134. doi: 10.3321/j.issn:1000-7091.2006.z1.031.