Book of abstracts : 2nd International Symposium on Plum Pox Virus : Olomouc, Czech Republic, September 3-6, 2013 : (continuation of Middle European meetings on Plum Pox Virus) / [editor Jana Šafářová ; organizer Department of Cell Biology and Genetics, Faculty of Science, Palacký University, Olomouc].    Olomouc :  Palacký University,  2013 . 83 s.