s.    --------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------   Parameter                                                    PVY                                                                                                                                                   TuMV                                                                                                                                            ------------------------------------------------------------ ------------------------------------------------- ----------------------------------------------------- --------------------------------------------- ---------------------------------------------- ---------------------------------------------- ---------------------------------------------- ----------------------------------------------                                                                \[[@B000-viruses-00-00000]\]                      \[[@B00-viruses-00-00000]\] 