| characterization of four viral species belonging to the family potyviridae isolated from ranunculus asiaticus. | abstract four different viral species were isolated from diseased ranunculus asiaticus plants growing in imperia province (italian riviera-liguria region). infected plants exhibited mosaic symptoms and growth abnormalities. the viruses were mechanically inoculated to a range of herbaceous hosts and differentiated biologically. long flexuous particles were present in leaf dip extracts observed by electron microscopy. a general protocol for the amplification of potyvirus genome fragments through r ... | 2006 | 18943173 |