条形柄锈菌大麦专化型的寄主范围

The Host Range of Puccinia striiformis West.f.sp.hordei

用条形柄锈菌大麦专化型（ＰｕｃｃｉｎｉａｓｔｒｉｉｆｏｒｍｉｓＷｅｓｔ．ｆ．ｓｐ．ｈｏｒｄｅｉ）的３个代表性菌系，对８个族的２５属６１种禾草进行了温室人工接种。发现寄主９属２２种，除星星草（Ｐｕｃｃｉｎｅｌｌｉａｔｅｎｕｉｆｌｏｒａ）属于早熟禾族外，其余均属于小麦族。大麦属（Ｈｏｒｄｅｕｍ）所有参试种均可被侵染，多数高感，大麦是主要寄主。旱麦草属（Ｅｒｅｍｏｐｙｒｕｍ）植物和簇毛麦（Ｈａｙｎａｌｄｉａｖｉｌｌｏｓａ）也较感病。小麦族的赖草属（Ｌｅｙｍｕｓ）、鹅观草属（Ｒｏｅｇｎｅｒｉａ）和Ｔｈｉｎｏｐｙｒｕｍ属的所有参试种均为免疫或近免疫。

Artificial inoculation to 61 grass species of 25 genera belonging to 8tribes was carried out in greenhouse with 3 representative isolates of Puccinia striiformisWest.f.sp.hordei. Twenty-two species of 9 genera were found to be hosts of the fun-gus. All of them belong to Triticeae except Puccinellia tenuiflora belonging to Poeae. Allthe tested species of Hordeum were infected,most of them were highly suseeptible. Bar-ley is the main host.The tested species of Eremopyrum and Haynaldia villosa were alsosusceptible. None of the tested species of Leymus,Roegneria and Thinopyrum in Triticeaewere infected.