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1 症状类型 常见的马铃薯病毒病有3种类型。花叶型:叶面叶绿素分布不均,呈浓、淡绿相间或黄绿相间斑驳花叶,严重时叶片皱缩,全株矮化,有时伴有叶脉透明;坏死型:叶、叶脉、叶柄及枝条,茎部都可出现褐色坏死斑,病斑发展连接成坏死条斑,严重时全叶枯死或萎蔫脱落;卷叶型,叶片沿主脉或自边缘向内翻转,变硬,革质化,严重时每张小叶呈筒状。此外还有复合侵染,引致马铃薯发生条斑坏死。
1 Types of symptoms There are 3 types of common potato virus diseases. Mosaic leaf types: leaf chlorophyll unevenly distributed, dense, light green phase or yellow-green phase mottled mosaic leaves, severe leaf shrinkage, whole plant dwarf, sometimes accompanied by veins transparent; necrosis: leaves, veins, petiole And branches, stems appear brown necrotic spots, lesion development connected necrosis streaks, severe full-blown dead or wilting off; Volume leaf type, the leaves along the main vein or inward from the edge of the flip, harden, leathery In the case of severe, each leaflet is cylindrical. In addition, there is a composite infection, causing potato streak necrosis.