槟榔芋病原菌的鉴定

AbstractIn recent years,the nutritional value,medicinal value,market demand and income of areca taro have increased steadily,which has brought a lot of high profits to many local farmers,resulting in more and more farmers choosing togrow areca taro,so that the outbreak rate of various diseases of areca taro hasalso increased.In order to effectively control the diseases and insect pests caused by areca taro,areca will be The molecular identification of the pathogens of taro strains was carried out.The materials of this test were 7 pathogens isolated from the healthy boundary of leaves and petioles of former senior sisters.Through the preliminary identification of morphological characteristics,growth characteristics,physical and chemical characteristics,DNA sequencing,molecular identification and sequence analysis,it was concluded that these strains have certain salt and heat resistance and are most suitable for growth The temperature is 37 C,which is athletic,rod-shaped,facultative aerobicbacteria and Gram-positive bacteria.Glucose provides the best carbon source,mannitol,sucrose in turn,peptone,yeast provides the best nitrogen source.Finally,according to the comparative gene library,the strains CPB-001 are avian scabby bacillus,CPB-004 are Bacteroides valengellans,and CPB-010,CPB-012,CPB-022 and CPB-023 are bacillus of the same genus.The corms ofall the strains were rotten and had no response to the leaves.The corms of allthe strains were rotten and had no response to the leaves.Key words:areca nut:physiological and biochemical Identification