在乌鲁木齐市郊八一农学院花圃中栽植的大丽菊(Dahliapinata cav.)出现花叶病状(图1).取新鲜病叶用0.05M pH7.0～7.5磷酸缓冲液抽提,石臼捣烂,双重纱布榨汁.汁液加10%体 Mosaic disease occurred in Dahliapinata cav. Planted in flower garden of Bayi Agricultural College in the outskirts of Urumqi (Figure 1). Fresh leaves were extracted with 0.05M phosphate buffer (pH7.0-7.5) Double gauze juice. Juice plus 10% body