Sökülen çeliklerde sürgün uzunluğu (cm), boğum sayısı (adet), yaprak sayısı (adet), sürgün yaş ağırlığı (g), sürgün kuru ağırlığı (g), kök yaş ağırlığı (g) ve kök kuru ağırlığı (g) belirlenmiştir. Ayrıca anaçların tuza dayanımlarının belirlenmesi için sürgün ve kök kuru ağırlığı bazında tolerans oranı, tolerans indeksi ve canlılık oranı (%) hesaplanmıştır.

Sonuç olarak bütün parametreler dikkate alındığında, tuz stresine en çok dayanıklılık gösteren anacın 5 BB, bunun ardından 1103 P ve en dayanıksız anacın da 420 A olduğu sonucuna varılmıştır.

This research was carried out to determine the salinity resistance (salt stress) of 1103 P, 420 A  and 5 BB American grapevine rootstocks which all have a widespread use in Aegean and Marmara regions. Cuttings were planted on March 29th, 2002 and salt application was started one month later (April 27th, 2002). Uprooting the cuttings were done 50 days later than the beginning of the salt application, June 15th, 2002. The salt consantration are 0; 5000; 10000; 15000 and 20000 mg/L NaCl. Shoot length (cm), number of nodes, number of leaves, fresh shoot weight (g), dry shoot weight (g), fresh root weight (g), and dry root weight (g) were determined on the uprooted cuttings. Besides, to determine the resistance of the rootstocks to salinity, tolerance rate, tolerance index and liveliness rate (%) were calculated on the basis of shoot and dry root weight. Examination of the parameters revealed no difference between 500 mg/l salt application and 0 mg/l salt application to the 1103 P and 5 BB rootstocks ,while, in general, unfavorable effects of salinity increased with incresing rates of salt application. When 420 A rootstock was examined it was determined that 0 mg/l salt concentrations gave the best results. When tolerance rates, which were aimed to compare three district rootstock were examined, in the base of dry shoot weight, we found no difference between the rootstocks in the 5000 mg/l, 10.000 mg/l and 20.000 mg/l salt concentrations, but 420 A was the most tolerant genotype at 15.000 mg/l.salt level. When the tolerance rates in the base of dry root weight were examined, no difference was found between rootstocks in the 20.000 mg/l salt concentration. However, 1103 P and 5 BB rootstocks were grouped together, while 420 A was the least tolerant genotype in 5000 and 10000 mg/l salt concentrations. In 15000 mg/l salt concentration, 5 BB showed the highest and 420 A showed the lowest tolerance. When the tolerance index in the basis of dry root weight was examined it was seen that 1103 P and 5BB rootstocks were in the same statistics group and 420 A rootstock had lower values. In conclusion, when all parameters were taken into consideration it was determined that 5 BB is the highest in tolerence against to salt stress. 1103 P and 420 A ranked second and third in terms of salt tolerance, respectively.