IDENTIFICATION ON THE PATHOGNIC BACTERIA OF A NEW TABACCO DISEASE-BLACK ROT

A new bacterial disease,tobacco black rot was found for the first time in Ruyuancounty Guangdong province. According to the studies on the majar bacteriologic characteris-tics and host range of the pathogenic bacteria,the causal organism was identified to be anisolate of Xanthomonas campestris PV. raphani(white)Dye.