الخلاصة:
This study was conducted to assess levels of grafting-compatibility in
the nursery between scions of three Palestinian local table-grapevine
cultivars (Vitis vinifera) and five grapevine rootstocks resistant to
phylloxera. The cultivars inspected were Halawani, Halawani-Baladi,
and Red-Romi, whereas, the rootstocks were "Richter-110, B41,
Ruggeri-140, Paulsen-1103, and 216/3". For comparison purpose,
cuttings of the three cultivars were also grown on their own-roots. The
experiment was set up in spring 2006 and, the grafting was done by using
indoor tongue grafting technique. Several parameters of graft compatibility-incompatibility including: callus production at the graft union, root development, grafting success in the incubation room as well
as in the nursery (the survival percentage), bud burst, and shoot length
were evaluated. Results have shown a positive correlation between callus
development and grafting success. Indeed, Halawani produced the best
results of callus development and graft success, Halawani-Baladi was
intermediate, and Red-Romi was worst. After five months in the nursery,
Halawani demonstrated the highest compatibility with Richter-110 (100%),
Paulsen-1103 (95%), Ruggeri-140 (85%), 216/3 (85%), and B41 (80%)
successful grafts. Halawani-Baladi showed medium compatibility (79%
successful grafts on Richter-110, 60% on Paulsen-1103, 79% on
Ruggeri-140, 80% on 216/3 and 60% on B41). Red-Romi exhibited poor
compatibility (25% of successful grafts on Richter-110; 20% on Paulsen-
1103; 10% on Ruggeri-140; 5.3% on 216/3 and 45% on B41).
