By identifying the opines synthesized in the gall on tomato seedling incited by pathogenic strains, it was found that strains from peach, apple, hop beet and Chinese White poplar harboured nopaline type Ti plasmid.

• 对致病菌株的质粒类型的研究结果表明:桃树、啤酒花和甜菜菌株基本上都是胭脂碱(Nopaline)型质粒、葡萄菌株基本上是章鱼碱(Octopine)型质拉。