【摘要】 对苍术白绢病菌(Sclerotium rolfsii Sacc.)的生物学特性进行了初步研究。结果表明,苍术白绢病菌菌丝生长的致死温度为50℃处理10min,最适pH值为6.00,病原菌均能很好地利用供试的各种碳源;以尿素、NH4Cl和(NH4)2SO4为氮源的利用程度较高,以甲硫氨酸和Ca(NO3)2为氮源的利用程度较低;10%世高杀菌剂对菌丝生长具有显著的抑制作用。更多还原

【Abstract】 Biological characteristics of Sclerotium rolfsii causing atractylodes southern blight were primarily studied in this paper.The results showed that the lethal temperature of mycelium was 50℃ maintaining 10 min.The mycelium could grow at different pH value ranging from 4.05-8.97,but the optimum was 6.00.The pathogen could well utilized the supplied carbon sources,and maltose was the best.As to nitrogen sources,pathogen made use of urea,NH4Cl,(NH4)2SO4 much better than others.Three fungicides were screened on PDA plates,the results indicated that 10% difenoconazole could significantly inhibit the mycelium growth of the pathogen.更多还原