A Study on the Determination of Promising Walnut (Juglans regia L.) Genotypes: Turkey, Kars-Kağızman Region

Abstract

This research was conducted in the central district and villages of Kağızman, Kars province in East Anatolia region of Turkey between 2015 and 2016. The aims of the study was to determine the walnut (Juglans regia L.) genotypes with high quality in terms of fruit quality and tree characteristics among the seed grown walnut population. As a result of the weighted rating based on observations and evaluations for two years, 16 walnut genotypes were chosen as promising. In selected genotypes the average fruit weight was determined between 10.14-14.98 g, kernel weight was between 5.01-8.08 g, kernel rate was of 41.58-60.20%, and shell thickness was between 2.00-4.53 mm. The interior colors of promising genotypes were determined as 'light' in 25%, 'yellow' in 62.50% and 'brown' in 33.33%. Fruit shape of all selected genotypes were round, and fruit size was extra quality. It was determined that 12 genotypes show protandry, and 4 genotypes show flowering in protogeny character in terms of flowering. It is suggested that the selected genotypes can be used as parents for future hybridization and breeding studies.

Keywords

• walnut
• juglans regia l.
• selection
• pomology
• phenology
• kağızman