藿香叶斑病病原鉴定及生物学特性研究  

Study on Pathogen Identification and Biological Characterstics of Leaf Spot of Pogostemon cabli

作　　者：李林玉[1] 杨海艳[2] 王馨[1] 杨斌[1] 董志渊[1] 杨丽英[1] 李绍平[1] 

机构地区：[1]云南省农业科学院药用植物研究所,云南昆明650223 [2]楚雄师范学院,云南楚雄675000

出　　处：《西南农业学报》2013年第4期1513-1517,共5页Southwest China Journal of Agricultural Sciences

基　　金：云南省科技厅重点产业创新工程(2008IF024);楚雄师院院级项目(05-YJRC04)

摘　　要：对藿香叶斑病进行病原鉴定，并研究其生物学特性和杀菌剂对其抑制作用。结果表明，该病原菌为链格孢菌（Alternaria）；该病原菌最适宜生长的碳源为蔗糖，氮源为硝酸钠。菌丝适宜生长的温度和pH值范围均较广；25—32℃菌丝生长良好，速度快，分生孢子萌发率较高；菌丝适宜生长的pH值为6．0—7．0，弱酸性更利于孢子萌发；光周期对茵落生长的影响不大，但是光照有利于分子孢子萌发。供试的杀菌剂中以代森锰锌和扑海因的抑茵效果最好。Identification of pathogen of leaf spot of Pogostcmon cabll, and study on its biological characteristics and inhibition of germicides was carried out. The results showed that the pathogen was Alt, emada sp. The best carbon source for mycelial growth was sucrose. The best nitrogen sources mycelial growth was NaNO3. The appropriate pH for mycelial growth was 6.0 - 7.0. The appropriate temperature for myce- lial growth and spore germination was 25 - 32℃. Pbetoperied had little influence on mycelial growth, light was helpful to spore germination. In laboratory test, Mancezeb and Iprodiane was the best germicide in the test.

关 键 词：藿香 叶斑病 病原鉴定 生物学特性 

分 类 号：S436.3[农业科学—农业昆虫与害虫防治]