31种中药材水提取物对茄子绵疫病病原菌的抑制作用

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中图分类号：S641.1 文献标志码：A 文章编号：1673-2871（2025）06-203-06

Inhibitory effects of aqueous extracts from 31 traditional Chinese herbs on phytophthora blight of eggplant

TAN Zhiyong'，LI Yuzhu'， TAN Daxin²，XU Zaiqian'， CHEN Xiaoxiong

1.TongrenUiaicein

Abstract：This study investigates the inhibitoryefects of extracts from traditional Chinese herbs on phytophthora blight ofeggplant，aiming toprovidescientific basis fortheselectionandresearchanddevelopmentofbotanicalfungicideof phytophthora blightof eggplant.The efectsofaqueous extracts from31traditional Chinese herbsonPhytophthoracapsiciandPhytophthoranicotianae were measuredby mycelial growthrate method.Theresultsshowedthattheaqueous extractsofdiferentChineseherbshaddifferenteffectsonthemycelialgrowthofthetestedfungi，andtheinhibitionrates was 0-100% .Theaqueous extractsof Coptis chinensis Franch.hadthe most significant inhibitoryeffect on the two pathogens，and the inhibition rate was 100% .The EC50 valuesof the aqueous extract of Coptischinensis Franch.onPhytophthoracapsiciandPhytophthoranicotianaewere 1.063mg⋅mL-1 and 1.286mg⋅mL-1 ，respectively.Thisstudy providesa new way and data support fortheprevention and controlof phytophthora blightof eggplant and the developmentof botanical fungicide .

KeyWords：Phytophthorablightofeggplant;Phytophthoracapsici;Phytophthoranicotianae;Botanicalfungicide

绵疫病为茄子三大病害之一，全生育期均可发生，苗期和成株期均可受害，一般会导致减产 20%～ 30% ，发病严重时损失超过 50% ，主要危害茄果，也能危害叶、茎、花器等部位。（剩余9657字）