Genetic variability in Grapevine virus A from Vitis vinifera L. × Vitis labrusca L. in Sichuan, China

Grapevine virus A (GVA) has a quasispecies nature and is closely associated with the rugose-wood disease complex of Vitis vinifera L. In the diff erent growing regions of table grape in Sichuan, southwest China, the incidence of GVA infection was found to be 16.9% by ELISA detection among 178 grape plants (Vitis vinifera L. × Vitis labrusca L.).