穿山龙锈病病原生物学研究  

A Primary Study on the Etiology of Yam Rust

作　　者：李阳[1] 傅俊范[1] 周如军[1] 严雪瑞[1] 

机构地区：[1]沈阳农业大学植物保护学院,沈阳110161

出　　处：《沈阳农业大学学报》2007年第3期312-316,共5页Journal of Shenyang Agricultural University

基　　金：辽宁省自然科学基金项目(20052120)

摘　　要：穿山龙(Dioscorea nipponica Makino.)锈病是辽宁东部山区穿山龙生产上新流行的重要病害。对穿山龙锈病病原鉴定及生物学特性研究表明,引起该病的病原菌为薯蓣柄锈菌(Puccinia dioscoreae Kom.)。该菌夏孢子适宜萌发温度为10～20℃,适宜萌发pH值为6～8,夏孢子萌发速度慢且萌发率较低,加入糖源能促进夏孢子萌发;冬孢子抗逆性较强,可在田间病残体上越冬。Yam is an important medicinal plant and has higher medical and economic value. Yam Rust is caused by Puccinia dioscoreae Kom. This paper reported the etiology of Yam Rust. The optimum temperature of urediospores germination was 10- 20℃; the optimum pH was 6-8. The maximal germination rate of teliospores through the winter was 54.50%.

关 键 词：穿山龙锈病 薯蓣柄锈菌 病原学 

分 类 号：S435.672[农业科学—农业昆虫与害虫防治]