Determination of Fruit Quality Traits in Some Hazelnut Cultivars Grown at Different Altitudes and Locations in Ordu Province

Hazelnut whose cultural homeland is known as Anatolia has been grown in Turkey for centuries. Even though ？ak？ldak and Ya？l？ is the most commonly cultivated hazelnut cultivars in Ordu province, other cultivars are also cultivated. The effect of different altitudes for two years (2016-2017) on fruit traits of 5 hazelnut cultivars (？ak？ldak, Kara, Palaz, Sivri, and Ya？l？), which meet 31.64% of total hazelnut production in Turkey and 36.34% of the production in Black Sea Region and are cultivated in Ordu province, was investigated in this study. For this purpose, nut samples were taken from 5 hazelnut cultivars grown in orchards with low altitude (100 m= Turnasuyu), medium altitude (350 m=Yemi？li), and high altitude (800 m=Ye？ilyurt) and various measurements and weights were performed. Hazelnut cultivars grown at different altitudes have average nut weight ranging between 1.52 g (350 m-？ak？ldak cv.) and 2.92 g (350 m-Kara cv.), a kernel weight ranging between 0.80 g (350 m-Sivri cv.) and 1.47g (350 m-Kara cv.), a kernel ratio ranging between 46.88% (350 m-Sivri cv.) and 55.52% (350 m-？ak？ldak cv.), a shell thickness ranging between 0.94 mm (350 m-Ya？l？ cv.) and 1.29 mm (800 m-Kara cv.), a nut size ranging between 14.27 mm (350 m-Sivri cv.) and 18.67 mm (350 m-Kara cv.) and a bleaching ratio ranging between 0.00% (350 m and 800 m Sivri cv.)- 87.58% (800 m Palaz cv.). The results revealed that fruit quality traits in hazelnut cultivars grown at different altitudes in Ordu province varied based on altitude