Physical and Chemical Properties of Superior Walnut Types in Cermik and Cungus Populations

Abstract

This study was conducted out to determine physical and chemical properties of the superior walnut types within seedling
population in Cermik and Cungus Populations and their bound villages of Diyarbakır province in Turkey during years 2006 and
2007. No studies have been made about walnut trees in these populations up to now. Therefore, the study is very significant with
respect to be first study about the walnut types in these areas. Firstly, 850 walnut trees were surveyed and 105 types in them were
marked and evaluated. Based on the results of these evaluations, 12 walnut types were selected as ‘’promising types’’ with respect
to fruit quality properies. Average fruit weight, the fruit length, the kernel weight, and the kernel ratio of the types were changed
between 15.22-10.19 g, 42.89 mm – 34.42 mm, 7.33 g – 5.26 g and 59.75 – 48.24%, respectively.The moisture, the ash and the oil 
of the types were changed between 4.07-1.90%, 3.90-1.75% and 67.88-58.44%, respectively. In addition, the protandrous, the protogynous
 and homogynous ratios of the types were determined to be 50.00%, 33.33% and 16.66%,respectively.