There are many strains of potato virus Y ( PVY ) identified in the last few decades. As molecular technology and immunity technology were applied in the identification of the PVY strains, a series of strain identification methods were developed. Here the types of the strains and substrains, molecular characters and the identification methods of PVY are reviewed.%马铃薯Y病毒( PVY)株系分化现象明显,具有多个株系类型。随着分子生物学技术和免疫学技术逐渐被引入PVY的株系鉴定中,产生了一系列的株系鉴定方法。为此,对PVY的主要株系、亚株系的种类及分类依据、分子特征以及近年来应用于PVY株系鉴定的传统生物学方法、分子生物学方法、免疫学方法等进行了综述。
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