Abstract:
To identify the species and distribution of tobacco virus diseases in Henan Province, 566 samples of virus diseases were collected from 11 tobacco-planting areas in Henan Province from 2015 to 2017 and analysed by ELISA with nine antibodies. The results showed that in Henan tobacco-planting areas, the infection percentage of virus diseases was 96.47%. Tobacco mosaic virus (TMV), cucumber mosaic virus (CMV), tobacco etch virus (TEV), potato virus Y (PVY) and tobacco vein banding mosaic virus (TVBMV) occurred most seriously and TMV had become a dominant virus. The infection percentage of single virus was 34.63%, and that of TMV was the highest (26.86%). The infection percentage of viruses (≥ 2) was 61.84%. There were five main infection types in 11 tobacco-planting areas:TMV+CMV, TMV+CMV+TEV, TMV+TEV+PVY, TMV+TEV+TVBMV and TMV+CMV+TEV+PVY, and their infection percentages were 18.73%, 3.36%, 3.89%, 5.83% and 7.24%, respectively. Therefore, the domain viruses are determined as TMV, CMV, TEV, PVY and TVBMV and the infection types are TMV+CMV, TMV+CMV+TEV, TMV+TEV+PVY, TMV+TEV+TVBMV and TMV+CMV+TEV+PVY in 11 tobacco-planting areas in Henan Province.