87 strains of Bacillus spp. as initial bacteria were applied to select and breed high-yield lysine strain. After twice screening by determining the lysine content of bacterial supermatant,one strain named YB83 was screened out,whose lysine content was 186.85 μg/mL,27.68% higher than LB control medium.According to the morphological and physiochemical properties,combining with 16S rDNA gene sequence and its position in the phylogenetic tree,strain...