Abstract: Nymphal development time and fecundity of Sitobion avenae (F.) were determined on nine widespread wheat varieties cultivated in Tekirdağ Region in Turkey. Tests were carried out in controlled environment chambers (25±1°C, 65±5 % R.H. and 16:8 light and dark cycle). Developmental time ranged from 5.75±0.25 to 7.20±0.20 day. Fecundity was found the highest (12.87±1.50) on cv. Sana. Cv. MV-17, cv. Miryana, cv. Pehlivan and cv. Saraybosna were found particular resistant wheat varieties against S. avenae.