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In Turkey, the predominant method of walnut breeding is selection breeding which is the selection of elite genotypes as practiced worldwide. Due to this reason, the method of selecting elite genotypes with the desired agronomic characteristics is a short span and easily practicable. In countries, where the population of walnut is at low scale, hybridization practices are not attempted to acquire desired agronomic characteristics. The hybridization practices are time consuming to get the target genotypes. The walnut varieties improvement programs should include the priority issues such as: late leaf foliage, fruiting in lateral branches, shortening of the vegetation period, early maturity and harvesting, good fruit quality, high yield and resistance to diseases.

This investigation was carried out during 2015-2016 in the Sakarya area. Strawberry trees were selected by including naturally growing trees. In this selection study, each tree was considered as a tree species and 50 species of strawberry trees were examined. In the study of phenological observation, pomological analysis and Weighted Grading method were applied on Strawberry tree genotypes. 100 fruit samples were collected during the research years of 2015 and 2016 and 10 fruits were studied because of the importance of each species. The fruit weight ranged between 1.70 g and 9.03 g, width from 11.42 mm to 30.52 mm, length 10,15 mm to 14.09 mm, and the handle thickness was 1.13 mm to 3.29 mm, the number of fruits in a bundle wass 3 to 8, the amount of soluble dry matter 15 to 32%, fruit juice pH 3,09 to 3.51. At the end of the study, 5 genotypes with superior characteristics were selected.