摘要
１９９１～１９９３年从长春等地采集的标本中分离得到Ａｌｔｅｒｎａｒｉａ菌株。经过对病菌的致病性、形态、生长温度、ｐＨ范围及对不同碳、氮源的利用等项目的测定，确定该病菌为Ａ．ａｌｌｅｒｎａｔａ（Ｆｒ．）Ｋｃｉｓｓｌｅｒ．是引起烟草赤星病的病原菌。病菌在５～３５℃均可生长，但以２５℃，４ｈ条件下萌发率可达１００％，病菌在９种不同的培养基上生长，其小燕麦琼胶培养基、ＰＤＡ、玉米粉琼胶培养基适合于菌丝生长，而蔗糖琼胶培养基最适合分生孢子的产生．在氮源的利用上，有机氮和无机氮均可利用。在碳源的利用上，以甘露糖、淀粉、乳糖中菌丝扩展较快，病菌在ｐＨ３．２～９．２之间均可生长，但以ｐＨ７时最合适。
Alternaria isolates was isolated from tobacco in Changchun and other places durins the growing season of 1991￣1993.The research results showed that the temperatural rans of mycelium growth was between 5-35℃,but the optinum was 25℃.Among 9 kinds of medium,OA,PDA,Co were better for mycelium growth,ZA was the best one for producing conidia.Development of hyphae was fastest in mannose,starch,lactose.The Potium pH value was 7.
出处
《吉林农业大学学报》
CAS
CSCD
1994年第2期31-35,共5页
Journal of Jilin Agricultural University
基金
吉林省科委资助
关键词
烟草
赤星病菌
生物学
Tobacco
biological characteristics
tobacco brown sot pathogen
