Study on Antifungal Action of Cynanchum komarovii Extracts(PDF)

《北方园艺》[ISSN:1001-0009/CN:23-1247/S]

Author(s):: GUO Cheng-jin¹; SHEN Rui-qing¹; YANG Jin²; ZHANG Li-rong¹; 1.Institute of Plant Protection，Ningxia Academy of Agriculture and Forestry Sciences，Ningxia Key Laboratory of Plant Disease and Pest Control，Yinchuan，Ningxia 750002；
2.College of Chemistry and Chemical Engineering，Beifang University of Nationalities，Yinchuan，Ningxia 750021

Keywords:: Cynanchum komarovii; antifungal activity; Alternaria solani; Botrytis cinerea

Abstract:: The antifungal action of three kinds of Cynanchum komarovii extracts by using a mycelial growth method were tested against pathogen of Alternaria solani and Botrytis cinerea.The results showed that total alkaloids，steroidal saponins and total flavonoids of Cynanchum komarovii extracts had inhibiting effects to the mycelium growth of these pathogen when the extract concentration was 500 mg/L.Among of them，total alkaloids of Cynanchum komarovii had a better antifungal activity，and the inhibition rate was 85% against tomatoes pathogen.Meanwhile，the EC50 of total alkaloids of Cynanchum komarovii against Alternaria solani and Botrytis cinerea were 84.3471 mg/L and 135.8679 mg/L respectively.Total alkaloids of Cynanchum komarovii could be botanical fungicide.

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Last Update: 2014-08-30