生菜菌核病生防菌筛选

Screening of Biocontrol Bacteria for Lettuce Sclerotinia Disease

摘要: 文章通过室内及盆栽试验筛选出对生菜菌核病有防治效果的生防细菌。室内试验结果表明，筛选菌株5-1、21-6、28-2、QZ-7、XMH-14、XMH-1对核盘菌的抑菌率分别为59.2%、58.6%、60.9%、62.7%、60.2%、65.2%。盆栽试验结果表明，筛选菌株QZ-7和XMH-1菌液处理能显著降低菌核病的发病级数，防效分别为65.9%和63.5%。由此可见，QZ-7和XMH-1菌液可在一定程度上防治生菜菌核病，具有开发为生防制剂的潜力。

Abstract: In this paper, through indoor and potted experiments, biocontrol bacteria that have control effects on lettuce sclerotinia disease were screened. The indoor test results showed that the selected strains 5-1, 21-6, 28-2, QZ-7, XMH-14, and XMH-1 had antibacterial rates of 59.2%, 58.6%, 60.9%, 62.7%, 60.2%, and 65.2% against Sclerotinia sclerotiorum, respectively. The results of the pot experiment showed that the treatment with the selected strains QZ-7 and XMH-1 bacterial solutions significantly reduced the incidence of Sclerotinia disease, with control effects of 65.9% and 63.5%, respectively. From this, it can be seen that QZ-7 and XMH-1 bacterial solutions can to some extent prevent and control lettuce sclerotinia disease, and have the potential to be developed as biocontrol agents.