19种植物提取物对3种植物病原真菌的抑菌活性

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中图分类号TQ458文献标识码A文章编号 0517-6611（2025）18-0173-03doi：10.3969/j.issn.0517-6611.2025.18.038

ngal Activity of Extracts from 19 Species of Plants Against Three Phytopathogenic Fung

DENG Zhi-yong，LUOHai-yu，CHENChaoyingetal（CollgeofLifeScience，GuangxiNormalUniversity，Guilin，Guangxi5406） Abstractultioflactf9ntsosdostotsisedeoe rumweredeteiedbygrowthatemetodThsultsshowedthat：IibtionateagainstCeratostispradoaof4plantextractseeboe 60% when their concentration was 10mg/mL .TheywereMicheliaalba（ 97.29% ），Ficusabelii（ 96.99% ），Chrysanthemumindicum （93.12%） ）and Eucalyptus（ 74.21% ），and their median effective concentration （ EC50 ）were 3.4145，3.5686，3.6186，4.3956 mg/mL，respectively，while the remaining15 plant extracts werebelow 60% .Inhibitionrate against Pestalotiopsis theae of 4 plant extracts were above 60% when their concentration was 10mg/mL .TheywereMicheliaalba（ 79.65% ），Ficusabelii 74.12% ），Chrysanthemumindicum（ 70.81% ）and Eucalyptus （ 64.29% ），and their EC50 were 4.448 5，4.581 2，4.864 7，6.360 6 mg/mL，respectively，while the remaining 15 plant extracts were below 60% .Inhibition rate against Sclerotinia sclerotiorum of 4 plant extracts were above 60% when their concentration was 10 mg/mL.They were Chrysanthemum indicum （ 76.06% ），Eucalyptus（ 75.95% ），Micheliaalba（ 66.27% ）and Ficus abelii （ 65.85% ），and their EC50 were 4.613 6，4.4609，5.163 2，5.511 4 mg/mL，respectively，while the remaining 15 plant extracts were below 60% .The alcohol extracts from Michelibaceddid and Sclerotinia sclerotiorum.

KeyWordsPlant extract; Antifungal activities;Phytopathogenic fungi

植物是天然的生物农药宝库，从植物中提取生物活性成分制成现代新型农药不仅是对植物资源的有效利用，更是保护环境的重要举措。（剩余5518字）