Selection of walnut types with high fruit bearing and quality in Sanliurfa population

Abstract

This study was conducted to determine walnut types with high fruit bearing and fruit quality within seedling population in Siverek and Hilvan districts of Sanliurfa province and their villages in Turkey during years 2005 and 2006. No studies have been made about walnut trees in these areas up to now. Therefore, this research is very important with respect to be first study about the walnut types in these locations. During this research, firstly about 900 walnut trees were surveyed and 125 types in them were marked and evaluated. Based on the results of these evaluations, eleven walnut types were selected. It was determined that average fruit weight, fruit length, kernel weight, kernel ratio and form index of the selected types were changed from 14.31 to 9.63 g, from 44.93 to 34.00 mm, from 6.99 to 5.38 g, from 62.16 to 44.06% and 1.36 - 1.08, respectively. It was determined that moisture, ash, oil and protein ratios of the selected types were changed from 4.73 to 1.63%, from 2.89 to 1.88%, from 65.64 to 58.88% and from 20.18 to 13.70%, respectively. In addition, it was observed that protandrous and protogynous ratios of the selected types were found to be 63.63 and 33.37%, respectively. According to the weighted ranked method, in all walnut types, SU-5 and SU- 83 which had the higher scores were evaluated to be best walnut types. © 2010 Academic Journals.