邻苯二甲酸和丙二酸对大豆根腐病病原菌的化感作用

Allelopathy of Phthalic Acid and Propanedioic Acid on Pathogenic Fungi Producting by Root Rot in Soybean

采用室内培养和统计分析相结合的方法研究了大豆根分泌物中的邻苯二甲酸和丙二酸对根腐病病原菌的化感作用。结果表明 :与对照相比 ,高浓度的邻苯二甲酸和丙二酸 (L5 和B5)对半裸镰孢菌、粉红粘帚菌和尖镰孢菌 ,尤其是对半裸镰孢菌的生长有化感抑制作用 ,差异达显著或极显著水平。而低浓度的邻苯二甲酸和丙二酸对半裸镰孢菌、粉红粘帚菌和尖镰孢菌的生长有化感促进作用 。

Allelopathy of phthalic acid and propanedioic acid of root exudations of soybean on pathogenic fungi producing by root rot was studied by indoors culture experiments and statistical method.The results showed that allelopathy inhibition of high density phthalic acid and propanedioic acid(L 5 and B 5)on the growth of Fusarium semitectum,Cliocladium roseum and Fusarium oxysporum,especially Fusarium semitectum reached significant level or especially significant level in contrast with check.However,allelopathy promotion of low density phthalic acid and propanedioic acid on the growth of Fusarium semitectum,Gliocladium roseum and Fusarium oxysporum partly reached difference significant level.