Phenotypic characteristics of Xanthomonas campestris pv. campestris from Nepal

Twenty strains of Xanthomonas campestris pv. campestris (Xcc) were isolated from two major crucifer-growing valleys, Chitwan and Kathmandu in Nepal an d characterized by biochemical and pathogenicity tests. Strains were homoge neous in bacteriological characteristics. The ability of a strain to induce high or low disease severity index (DSI) on three host plants, broccoli, c abbage, and cauliflower, was interpreted as virulence. Strains that were as sociated with high or low virulence were significantly different (P > 0.05) . No relationship between virulence and biochemical characteristics was obs erved.