Preliminary Compatibility between Some Table-Grapevine Scion and Phylloxera- Resistant Rootstock Cultivars

A trial of seven scion grape cultivars (beiroti, dapogi, fhesi, hamadani-baladi, jandali, white-romi and zeiny) and five phylloxera resistant rootstock cultivars (richter-110, paulsen-1103, ruggeri-140, b 41 and 216/3), in addition to own rooted vines were undertaken to asses preliminary compatibility. the results indicated that 'fhesi' and the combinations of jandali/richter-110, white-romi/ruggeri-140, white- romi/216/3 and white-romi/b 41 were highly compatible. positive correlations between callus development, root development and successful grafts were also observed. however, 'hamadani-baladi' and 'zeiny' were significantly incompatible with less than 50% of graft-success. time needed for buds-burst in the grafted combination was significantly less (33- 48 days) than that of the own rooted plant (60-66 days). further research is needed for the prolonged compatibility effect on yield and quality