枯草芽孢杆菌B_(1-41)对小麦全蚀病及其病原的防治和抑制作用

Control Efficacy and Inhibitory Action of Bacillus Subtilis B1-41 Strain on Wheat Take-all and Its Pathogenic Fungi

从小麦根际土壤中分离得到枯草芽孢杆菌(Bacillussubtilis)B1-41拮抗菌株,室内测定其带菌培养液对小麦全蚀病菌(Gaeumannomycesgraminisvar.tritici)9826菌株和9812菌株的抑制效果分别为70%和68%,盆栽试验中,其防治效果为63%和59%,高于化学杀菌剂处理的55%和51%的效果.试验表明,该菌株可以造成病菌菌丝发生畸变和菌丝细胞壁瓦解.