CAJ | 학술논문

为探明内生细菌 DEB-2菌株对枇杷灰斑病病原菌的抑制效果，采用生长速率法测定了菌株DEB-2发酵液对枇杷灰斑病菌菌丝生长及孢子萌发的室内毒力。结果表明，菌株 DEB-2能显著抑制枇杷灰斑病病原菌（Pestalotiopsis eriobotrfolia ）菌丝生长和孢子萌发，其发酵液对枇杷灰斑病菌菌丝生长及孢子萌发的毒力方程分别为 y＝1．6548x＋7．493和 y ＝1．2842x＋6．8651；有效中浓度 EC50值分别为3．12％和3．53％。DEB-2菌株发酵液对枇杷灰斑病具有明显的生物防治潜力。
위탐명내생세균 DEB-2균주대비파회반병병원균적억제효과，채용생장속솔법측정료균주DEB-2발효액대비파회반병균균사생장급포자맹발적실내독력。결과표명，균주 DEB-2능현저억제비파회반병병원균（Pestalotiopsis eriobotrfolia ）균사생장화포자맹발，기발효액대비파회반병균균사생장급포자맹발적독력방정분별위 y＝1．6548x＋7．493화 y ＝1．2842x＋6．8651；유효중농도 EC50치분별위3．12％화3．53％。DEB-2균주발효액대비파회반병구유명현적생물방치잠력。
To explore the inhibitory effect of endophyte DEB-2 to the pathogens of loquat gray leaf spot,the indoor virulence of endophyte DEB-2 against the pathogens was tested by growth rate method. The results showed that endophyte DEB-2 could significantly inhibit the mycelial growth and spore germination of Pestalotiopsis eriobotrfolia,the toxicity equations of which were y= 1.6548x+7.493 and y=1.2842x+ 6.8651 respectively;the EC50 values were 3.12% and 3.53% separately.Therefore, endophyteic strain DEB-2 had great potential for the biological control of loquat gray leaf spot disease.