水稻菌核秆腐病菌生物学特性研究  

Biological Characteristics of Nakataea sigmoidea in Rice Stalk Rot Sclerotia

作　　者：刘志恒[1] 田玲[1] 杨红[1] 刘雯雯[1] 黄欣阳[1] 苗淑梅 

机构地区：[1]沈阳农业大学植物保护学院,沈阳110161 [2]盘锦市大洼县植保站,辽宁大洼124200

出　　处：《沈阳农业大学学报》2012年第1期18-22,共5页Journal of Shenyang Agricultural University

基　　金：国家水稻产业技术体系项目(CARS-01-02A)

摘　　要：采用常规方法对水稻菌核秆腐病菌生物学特性及菌核萌发条件进行了测定。结果表明:菌丝在PDA培养基、30℃、pH值5.5、黑暗条件下生长最佳,3d时菌落直径可达80mm,最佳碳氮源为葡萄糖和蛋白胨;在以半乳糖为碳源、NH4H2PO4或NH4Cl为氮源、25℃、pH值5.5、黑暗条件下菌核萌发率最高,达85%;菌丝致死温度为56℃、10min;菌核致死温度为61℃、10min。Abstract： Using the conventional methods, the biological characteristics of Nakataea sigmoidea and conditions of sclerotium germination in rice stalk rot sclerotium were determined. The results showed that the best conditions for mycelium growth were PDA media, 30~C, pH5.5, dark, 3d mycelium diameter up to 65.40mm, the optimum carbon source and nitrogen source glucose and peptone. The best conditions for selerotium germination were galactose, NH4H2PO4 and NH4C1, 25°C, pH5.5, dark, up to 85%. The mycelial lethal temperature were 56°C,lOmin. The selerotium lethal temperature were 61~C,lOmin.

关 键 词：水稻菌核秆腐病 双曲孢 生物学特性 

分 类 号：S435.111[农业科学—农业昆虫与害虫防治]