College of Horticulture，Hebei Agricultural University，Key Laboratory of North China Water-saving Irrigation Engineering，Collaborative Innovation Center of Vegetable Industry in Hebei，Hebei Key Laboratory of Vegetable Germplasm Innovation and Utilization，Baoding 071000，Hebei，China
Abstract：The suspected lettuce virus disease stain collected from Baoding City，Hebei Province was molecular biology identified by RT-PCR method，and the phylogenetic tree was constructed．The results showed that specific primers CMV and PVY amplified single bands with sizes of 260 bp and 420 bp，respectively．Through nucleotide sequence Blast alignment and phylogenetic tree analysis，it was found that the lettuce virus isolate from Baoding City，Hebei Province was clustered on the same branch as the Indian tomato CMV isolate（MN514839.1）and the Indian potato PVY isolate（JX945850.1），with homology
of 95% and 92%，respectively．The research first detected that the lettuce virus disease was caused by the combined infection of CMV and PVY in Baoding City，Hebei Province．
陈利达，李畅，李敬蕊，吕桂云，吴晓蕾，宫彬彬，高洪波*. 河北保定地区黄瓜花叶病毒与马铃薯Y病毒复合侵染叶用莴苣分子鉴定[J]. 中国蔬菜, 2024, 1(5): 69-74.
CHEN Lida，LI Chang，LI Jingrui，LYU Guiyun，WU Xiaolei，GONG Binbin，GAO Hongbo*. Molecular Identification of Co-infection of Cucumber mosaic virus and Potato virus Y on Lettuce in Baoding，Hebei. China Vegetables, 2024, 1(5): 69-74.
