Transgenic rootstock lines Number of plants(a) Resistant status of transgenic rootstocks Percentage of RT-PCR PPV-positive plants Percentage of RT-PCR PPV-positive plants Percentage of RT-PCR PPV-positive plants
Plum Rootstock Apricot Scion
St5’-1 5 Resistant Resistant 0 60
ST5’-6 4 Intermediate resistance Intermediate resistance 50 100
St5’-7 5 Susceptible Susceptible 100 100
St5’-9 4 Resistant Resistant 0 25