Chinese cabbage(Brassica rapa L.ssp.pekinensis) originated from China, and is one of the main vegetables in Asia,especially in east-Asia.These years with the development of protected-cultivation technique,continuous cropping is very common,which made the emergency and development of Chinese cabbage soft rot(CCSR) trending rising and cause great loss to the production. Erwinia carotovora is the main pathogeny of soft rot in Chinese cabbage, Erwinia.Carotovora subsp.carotovora(Ecc) is the predominant s...