禾谷类作物细菌性褐条病是我国局部地区禾谷类作物生产上的一种重要病害。通过对几种有关细菌的致病性,细菌学性状和DNA中G+C含量的比较研究,认为发生在我国的水稻细菌性褐条病是由Pseudomonas avenae Manns引起的,供试的黍、粟和稗细菌性褐条病菌都属于P.avenae;小麦上的细菌性褐条病是由Pseudo-monas syringae的一个致病变种引起的。此外,还从看麦娘上分离到一种国内尚无报道的水稻细菌性鞘褐腐病菌Pseudomonas fuscovaginae Tanil et al.。 Bacterial brownie disease of cereal crops is an important disease in cereal crops production in some areas in China. Several bacterial pathogenicity, bacteriological traits and G + C content in DNA were compared to study the bacterial browning in rice caused by Pseudomonas avenae Manns in our country. The tested millet and millet And barnyard grass bacterial pathogens belong to P.avenae; bacterial brown streaks in wheat are caused by a pathogenic variant of Pseudo-monas syringae. In addition, Pseudomonas fuscovaginae Tanil et al., A bacterial strain of rice sheath blight that has not yet been reported in China, was also isolated from Ophiopogon japonicus.