薄荷和泽漆提取液对稻曲病菌的离体抑制作用

Inhibition of Extracts of Mentha arvensis and Euphorbia helioswpia to Ustilaginoidea virens

分别用薄荷和泽漆提取液对稻曲病菌进行离体抑菌活性研究。结果表明,薄荷提取液对病菌的抑制效果较好,在10%浓度下对厚垣孢子和分生孢子的抑制达100%,而泽漆提取液的抑制率分别为14.79%和7.23%。此外,薄荷提取液还能显著抑制菌丝生长,引致菌落发生变异。本研究为开发防治稻曲病的植物源农药奠定了基础。

The inhibition of extracts of Mentha arvensis L. and Euphorbia helioswpia L. to Ustilaginoidea virens was observed. The results showed that extract of M. arvensis had a stronger inhibitory effect to U. virens than E. helioswpia, at 10%of concentration,the inhibition rate to the germination of chlamdospore and conidiospore of extract of M.arvensis are all 100%,while that of E.helioswpia were 14.79%and 7.23%.In addition, the extract of M. arvensis could inhibit the growth of fungal mycelium. These results would be a base for protection of the rice culture with the phytochemical pesticides.