(1.Academy of Agriculture and Forestry Sciences,Xining,Qinghai 810016;2.Qinghai Plateau Key Laboratory of Tree Genetics and Breeding,Xining,Qinghai 810016;3.Xishan Forest Farm of Xining City,Xining,Qinghai 810008)
The local walnut seed germplasms in Qinghai Province were used as research objects,and the combination of on-site and interview surveys were adopted.By primary selection,reselection and final,a single plant with excellent quality of nuts was selected as a further new variety in order to provide references for new variety breeding.The results showed that by the analysis of the main economic characteristics,chemical and high yield indicators of 93 individual nuts,the five nuts which selected from the local walnut seedling group were of good quality and had a good quality.Certain high-yield individual plants lay the foundation for the next step in the development of independent varieties.