Fruit characteristics of nine semierect and trailing thornless blackberry genotypes were evaluated in Adana province, in the Mediterranean region of Turkey. Five cultivars ('Chester Thornless', 'Jumbo', 'Loch Ness' ('Nessy'), 'Navaho' and 'DirksenThornless') and four selections (Bursa-1, Bursa-2, Bursa-3 and Bartin) were characterized in 2001 and 2002. The genotypes were compared for yield, fruit weight, concentration of total soluble solid (TSS), fruit acidity, TSS / acidity ratio, pH, color and harvest periods. The highest TSS content was in 'Navaho'; the heaviest berries were in 'Jumbo'; the highest yield was in 'Chester Thornless;' and the longest harvesting period was in 'Jumbo' and 'Navaho' in both years
